189156378780 has 36 divisors (see below), whose sum is σ = 573774349512. Its totient is φ = 50441700960.

The previous prime is 189156378767. The next prime is 189156378797. The reversal of 189156378780 is 87873651981.

189156378780 is a `hidden beast` number, since 189 + 1 + 5 + 6 + 378 + 7 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525434206 + ... + 525434565.

Almost surely, 2^189156378780 is an apocalyptic number.

189156378780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189156378780 is an abundant number, since it is smaller than the sum of its proper divisors (384617970732).

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

189156378780 is a wasteful number, since it uses less digits than its factorization.

189156378780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050868786 (or 1050868781 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 63.

The spelling of 189156378780 in words is "one hundred eighty-nine billion, one hundred fifty-six million, three hundred seventy-eight thousand, seven hundred eighty".