19522413728 has 12 divisors (see below), whose sum is σ = 38434752090. Its totient is φ = 9761206848.

The previous prime is 19522413697. The next prime is 19522413733. The reversal of 19522413728 is 82731422591.

It can be written as a sum of positive squares in only one way, i.e., 13181795344 + 6340618384 = 114812^2 + 79628^2 .

It is a super-2 number, since 2×19522413728² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305037683 + ... + 305037746.

Almost surely, 2^19522413728 is an apocalyptic number.

It is an amenable number.

19522413728 is a deficient number, since it is larger than the sum of its proper divisors (18912338362).

19522413728 is an equidigital number, since it uses as much as digits as its factorization.

19522413728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610075439 (or 610075431 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The spelling of 19522413728 in words is "nineteen billion, five hundred twenty-two million, four hundred thirteen thousand, seven hundred twenty-eight".