189925936879 has 32 divisors (see below), whose sum is σ = 238207495680. Its totient is φ = 147796451712.

The previous prime is 189925936877. The next prime is 189925936901. The reversal of 189925936879 is 978639529981.

It is not a de Polignac number, because 189925936879 - 2¹ = 189925936877 is a prime.

It is a super-2 number, since 2×189925936879² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189925936877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10192 + ... + 616405.

It is an arithmetic number, because the mean of its divisors is an integer number (7443984240).

Almost surely, 2^189925936879 is an apocalyptic number.

189925936879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

189925936879 is a deficient number, since it is larger than the sum of its proper divisors (48281558801).

189925936879 is a wasteful number, since it uses less digits than its factorization.

189925936879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626719.

The product of its digits is 529079040, while the sum is 76.

The spelling of 189925936879 in words is "one hundred eighty-nine billion, nine hundred twenty-five million, nine hundred thirty-six thousand, eight hundred seventy-nine".