189396736724 has 24 divisors (see below), whose sum is σ = 369248282760. Its totient is φ = 84399606144.

The previous prime is 189396736699. The next prime is 189396736729. The reversal of 189396736724 is 427637693981.

189396736724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 112572100 + 189284164624 = 10610^2 + 435068^2 .

It is a super-2 number, since 2×189396736724² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189396736729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62795819 + ... + 62798834.

It is an arithmetic number, because the mean of its divisors is an integer number (15385345115).

Almost surely, 2^189396736724 is an apocalyptic number.

It is an amenable number.

189396736724 is a deficient number, since it is larger than the sum of its proper divisors (179851546036).

189396736724 is a wasteful number, since it uses less digits than its factorization.

189396736724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125594699 (or 125594697 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 65.

The spelling of 189396736724 in words is "one hundred eighty-nine billion, three hundred ninety-six million, seven hundred thirty-six thousand, seven hundred twenty-four".