1461620441 has 4 divisors (see below), whose sum is σ = 1547598132. Its totient is φ = 1375642752.

The previous prime is 1461620437. The next prime is 1461620449. The reversal of 1461620441 is 1440261641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1281926416 + 179694025 = 35804^2 + 13405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461620441 - 2² = 1461620437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1461620449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42988820 + ... + 42988853.

It is an arithmetic number, because the mean of its divisors is an integer number (386899533).

Almost surely, 2^1461620441 is an apocalyptic number.

It is an amenable number.

1461620441 is a deficient number, since it is larger than the sum of its proper divisors (85977691).

1461620441 is an equidigital number, since it uses as much as digits as its factorization.

1461620441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85977690.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1461620441 is about 38231.1449083074. The cubic root of 1461620441 is about 1134.8667431384.

The spelling of 1461620441 in words is "one billion, four hundred sixty-one million, six hundred twenty thousand, four hundred forty-one".