189926851056 has 40 divisors (see below), whose sum is σ = 490693426944. Its totient is φ = 63302619840.

The previous prime is 189926851043. The next prime is 189926851067. The reversal of 189926851056 is 650158629981.

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, 300121 + ... + 685511.

Almost surely, 2^189926851056 is an apocalyptic number.

189926851056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189926851056 is an abundant number, since it is smaller than the sum of its proper divisors (300766575888).

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

189926851056 is a wasteful number, since it uses less digits than its factorization.

189926851056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395669 (or 395663 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 60.

The spelling of 189926851056 in words is "one hundred eighty-nine billion, nine hundred twenty-six million, eight hundred fifty-one thousand, fifty-six".