189506920379 has 12 divisors (see below), whose sum is σ = 232049291400. Its totient is φ = 153885318048.

The previous prime is 189506920367. The next prime is 189506920381. The reversal of 189506920379 is 973029605981.

It is not a de Polignac number, because 189506920379 - 2¹² = 189506916283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189506920319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101775074 + ... + 101776935.

It is an arithmetic number, because the mean of its divisors is an integer number (19337440950).

Almost surely, 2^189506920379 is an apocalyptic number.

189506920379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

189506920379 is a deficient number, since it is larger than the sum of its proper divisors (42542371021).

189506920379 is a wasteful number, since it uses less digits than its factorization.

189506920379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203552042 (or 203552035 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 189506920379 in words is "one hundred eighty-nine billion, five hundred six million, nine hundred twenty thousand, three hundred seventy-nine".