19137955508 has 24 divisors (see below), whose sum is σ = 38654886144. Its totient is φ = 8120772000.

The previous prime is 19137955469. The next prime is 19137955511. The reversal of 19137955508 is 80555973191.

It is a super-2 number, since 2×19137955508² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19137955508.

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, 3380828 + ... + 3386483.

It is an arithmetic number, because the mean of its divisors is an integer number (1610620256).

Almost surely, 2^19137955508 is an apocalyptic number.

It is an amenable number.

19137955508 is an abundant number, since it is smaller than the sum of its proper divisors (19516930636).

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

19137955508 is a wasteful number, since it uses less digits than its factorization.

19137955508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767423 (or 6767421 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 53.

The spelling of 19137955508 in words is "nineteen billion, one hundred thirty-seven million, nine hundred fifty-five thousand, five hundred eight".