189477124574761 has 9 divisors (see below), whose sum is σ = 189999883510749. Its totient is φ = 188955800116524.

The previous prime is 189477124574747. The next prime is 189477124574791. The reversal of 189477124574761 is 167475421774981.

The square root of 189477124574761 is 13765069.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 189477124574761 - 2²⁷ = 189476990357033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189477124574791) 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 8 ways as a sum of consecutive naturals, for example, 5051761570 + ... + 5051799076.

It is an arithmetic number, because the mean of its divisors is an integer number (21111098167861).

Almost surely, 2^{189477124574761} is an apocalyptic number.

189477124574761 is the 13765069-th square number.

189477124574761 is the 6882535-th centered octagonal number.

It is an amenable number.

189477124574761 is a deficient number, since it is larger than the sum of its proper divisors (522758935988).

189477124574761 is an frugal number, since it uses more digits than its factorization.

189477124574761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75748 (or 37874 counting only the distinct ones).

The product of its digits is 663828480, while the sum is 73.

The spelling of 189477124574761 in words is "one hundred eighty-nine trillion, four hundred seventy-seven billion, one hundred twenty-four million, five hundred seventy-four thousand, seven hundred sixty-one".