3215561492 has 48 divisors (see below), whose sum is σ = 6999918912. Its totient is φ = 1269818880.

The previous prime is 3215561491. The next prime is 3215561507. The reversal of 3215561492 is 2941655123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215561491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155618 + ... + 175065.

It is an arithmetic number, because the mean of its divisors is an integer number (145831644).

Almost surely, 2^3215561492 is an apocalyptic number.

It is an amenable number.

3215561492 is an abundant number, since it is smaller than the sum of its proper divisors (3784357420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3215561492 is a wasteful number, since it uses less digits than its factorization.

3215561492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330728 (or 330726 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 3215561492 is about 56705.9211370382. The cubic root of 3215561492 is about 1475.9974472578.

The spelling of 3215561492 in words is "three billion, two hundred fifteen million, five hundred sixty-one thousand, four hundred ninety-two".