188770145231 has 2 divisors, whose sum is σ = 188770145232. Its totient is φ = 188770145230.

The previous prime is 188770145183. The next prime is 188770145269. The reversal of 188770145231 is 132541077881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 188770145231 - 2²⁶ = 188703036367 is a prime.

It is a super-2 number, since 2×188770145231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188770145731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94385072615 + 94385072616.

It is an arithmetic number, because the mean of its divisors is an integer number (94385072616).

Almost surely, 2^188770145231 is an apocalyptic number.

188770145231 is a deficient number, since it is larger than the sum of its proper divisors (1).

188770145231 is an equidigital number, since it uses as much as digits as its factorization.

188770145231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 188770145231 in words is "one hundred eighty-eight billion, seven hundred seventy million, one hundred forty-five thousand, two hundred thirty-one".