2261615959 has 2 divisors, whose sum is σ = 2261615960. Its totient is φ = 2261615958.

The previous prime is 2261615957. The next prime is 2261615969. The reversal of 2261615959 is 9595161622.

2261615959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2261615959 - 2¹ = 2261615957 is a prime.

It is a super-2 number, since 2×2261615959² = 10229813492006979362, which contains 22 as substring.

Together with 2261615957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261615957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130807979 + 1130807980.

It is an arithmetic number, because the mean of its divisors is an integer number (1130807980).

Almost surely, 2^2261615959 is an apocalyptic number.

2261615959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261615959 is an equidigital number, since it uses as much as digits as its factorization.

2261615959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 46.

The square root of 2261615959 is about 47556.4502354833. The cubic root of 2261615959 is about 1312.6218220289.

The spelling of 2261615959 in words is "two billion, two hundred sixty-one million, six hundred fifteen thousand, nine hundred fifty-nine".