189567385742 has 64 divisors (see below), whose sum is σ = 338653440000. Its totient is φ = 79527936096.

The previous prime is 189567385723. The next prime is 189567385753. The reversal of 189567385742 is 247583765981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9663488 + ... + 9683084.

It is an arithmetic number, because the mean of its divisors is an integer number (5291460000).

Almost surely, 2^189567385742 is an apocalyptic number.

189567385742 is a deficient number, since it is larger than the sum of its proper divisors (149086054258).

189567385742 is a wasteful number, since it uses less digits than its factorization.

189567385742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19918 (or 19904 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 65.

The spelling of 189567385742 in words is "one hundred eighty-nine billion, five hundred sixty-seven million, three hundred eighty-five thousand, seven hundred forty-two".