3309815961 has 27 divisors (see below), whose sum is σ = 4850909973. Its totient is φ = 2174671800.

The previous prime is 3309815939. The next prime is 3309815987. The reversal of 3309815961 is 1695189033.

The square root of 3309815961 is 57531.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3309815961 - 2¹³ = 3309807769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3309815261) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21919236 + ... + 21919386.

Almost surely, 2^3309815961 is an apocalyptic number.

3309815961 is the 57531-st square number.

3309815961 is the 28766-th centered octagonal number.

It is an amenable number.

3309815961 is a deficient number, since it is larger than the sum of its proper divisors (1541094012).

3309815961 is an equidigital number, since it uses as much as digits as its factorization.

3309815961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The cubic root of 3309815961 is about 1490.2802591296.

The spelling of 3309815961 in words is "three billion, three hundred nine million, eight hundred fifteen thousand, nine hundred sixty-one".