189520520434 has 8 divisors (see below), whose sum is σ = 324892320768. Its totient is φ = 81223080180.

The previous prime is 189520520407. The next prime is 189520520507. The reversal of 189520520434 is 434025025981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768590002 + ... + 6768590029.

It is an arithmetic number, because the mean of its divisors is an integer number (40611540096).

Almost surely, 2^189520520434 is an apocalyptic number.

189520520434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

189520520434 is a deficient number, since it is larger than the sum of its proper divisors (135371800334).

189520520434 is a wasteful number, since it uses less digits than its factorization.

189520520434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13537180040.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 189520520434 in words is "one hundred eighty-nine billion, five hundred twenty million, five hundred twenty thousand, four hundred thirty-four".