189145937724 has 12 divisors (see below), whose sum is σ = 441340521384. Its totient is φ = 63048645904.

The previous prime is 189145937671. The next prime is 189145937731. The reversal of 189145937724 is 427739541981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 7881080727 + ... + 7881080750.

It is an arithmetic number, because the mean of its divisors is an integer number (36778376782).

Almost surely, 2^189145937724 is an apocalyptic number.

It is an amenable number.

189145937724 is an abundant number, since it is smaller than the sum of its proper divisors (252194583660).

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

189145937724 is a wasteful number, since it uses less digits than its factorization.

189145937724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15762161484 (or 15762161482 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 60.

The spelling of 189145937724 in words is "one hundred eighty-nine billion, one hundred forty-five million, nine hundred thirty-seven thousand, seven hundred twenty-four".