189606426540 has 96 divisors (see below), whose sum is σ = 560768710656. Its totient is φ = 47792747520.

The previous prime is 189606426539. The next prime is 189606426547. The reversal of 189606426540 is 45624606981.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (189606426547) 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, 1105357 + ... + 1265316.

It is an arithmetic number, because the mean of its divisors is an integer number (5841340736).

Almost surely, 2^189606426540 is an apocalyptic number.

189606426540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189606426540 is an abundant number, since it is smaller than the sum of its proper divisors (371162284116).

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

189606426540 is a wasteful number, since it uses less digits than its factorization.

189606426540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370759 (or 2370757 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 189606426540 in words is "one hundred eighty-nine billion, six hundred six million, four hundred twenty-six thousand, five hundred forty".