188747671401 has 9 divisors (see below), whose sum is σ = 272637407991. Its totient is φ = 125830912032.

The previous prime is 188747671363. The next prime is 188747671421. The reversal of 188747671401 is 104176747881.

The square root of 188747671401 is 434451.

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

It can be written as a sum of positive squares in only one way, i.e., 129978275625 + 58769395776 = 360525^2 + 242424^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 188747671401 - 2¹⁷ = 188747540329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188747671421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1230945 + ... + 1375761.

Almost surely, 2^188747671401 is an apocalyptic number.

188747671401 is the 434451-st square number.

188747671401 is the 217226-th centered octagonal number.

It is an amenable number.

188747671401 is a deficient number, since it is larger than the sum of its proper divisors (83889736590).

188747671401 is an frugal number, since it uses more digits than its factorization.

188747671401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289640 (or 144820 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 54.

The spelling of 188747671401 in words is "one hundred eighty-eight billion, seven hundred forty-seven million, six hundred seventy-one thousand, four hundred one".