2215850641 has 4 divisors (see below), whose sum is σ = 2225045284. Its totient is φ = 2206656000.

The previous prime is 2215850629. The next prime is 2215850653. The reversal of 2215850641 is 1460585122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1460585122 = 2 ⋅730292561.

It is an interprime number because it is at equal distance from previous prime (2215850629) and next prime (2215850653).

It can be written as a sum of positive squares in 2 ways, for example, as 686649616 + 1529201025 = 26204^2 + 39105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215850641 - 2¹³ = 2215842449 is a prime.

It is a super-2 number, since 2×2215850641² = 9819988126440221762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2215850597 and 2215850606.

It is not an unprimeable number, because it can be changed into a prime (2215850671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4596960 + ... + 4597441.

It is an arithmetic number, because the mean of its divisors is an integer number (556261321).

Almost surely, 2^2215850641 is an apocalyptic number.

It is an amenable number.

2215850641 is a deficient number, since it is larger than the sum of its proper divisors (9194643).

2215850641 is an equidigital number, since it uses as much as digits as its factorization.

2215850641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194642.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 2215850641 is about 47072.8227430648. The cubic root of 2215850641 is about 1303.7074916393.

The spelling of 2215850641 in words is "two billion, two hundred fifteen million, eight hundred fifty thousand, six hundred forty-one".