19520906464 has 48 divisors (see below), whose sum is σ = 38752786800. Its totient is φ = 9679094784.

The previous prime is 19520906459. The next prime is 19520906473. The reversal of 19520906464 is 46460902591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4966452 + ... + 4970380.

It is an arithmetic number, because the mean of its divisors is an integer number (807349725).

Almost surely, 2^19520906464 is an apocalyptic number.

It is an amenable number.

19520906464 is a deficient number, since it is larger than the sum of its proper divisors (19231880336).

19520906464 is a wasteful number, since it uses less digits than its factorization.

19520906464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195 (or 5187 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 19520906464 in words is "nineteen billion, five hundred twenty million, nine hundred six thousand, four hundred sixty-four".