190138352640 has 88 divisors (see below), whose sum is σ = 608145686400. Its totient is φ = 50703556608.

The previous prime is 190138352639. The next prime is 190138352653. The reversal of 190138352640 is 46253831091.

It is a junction number, because it is equal to n+sod(n) for n = 190138352592 and 190138352601.

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, 6174040 + ... + 6204759.

Almost surely, 2^190138352640 is an apocalyptic number.

190138352640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190138352640 is an abundant number, since it is smaller than the sum of its proper divisors (418007333760).

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

190138352640 is a wasteful number, since it uses less digits than its factorization.

190138352640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12378827 (or 12378809 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 190138352640 in words is "one hundred ninety billion, one hundred thirty-eight million, three hundred fifty-two thousand, six hundred forty".