188874313 has 2 divisors, whose sum is σ = 188874314. Its totient is φ = 188874312.

The previous prime is 188874311. The next prime is 188874319. The reversal of 188874313 is 313478881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164942649 + 23931664 = 12843^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 188874313 - 2¹ = 188874311 is a prime.

It is a super-2 number, since 2×188874313² = 71347012222443938, which contains 22 as substring.

Together with 188874311, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 188874313.

It is not a weakly prime, because it can be changed into another prime (188874311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94437156 + 94437157.

It is an arithmetic number, because the mean of its divisors is an integer number (94437157).

Almost surely, 2^188874313 is an apocalyptic number.

It is an amenable number.

188874313 is a deficient number, since it is larger than the sum of its proper divisors (1).

188874313 is an equidigital number, since it uses as much as digits as its factorization.

188874313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 188874313 is about 13743.1551326469. The cubic root of 188874313 is about 573.7521146743.

The spelling of 188874313 in words is "one hundred eighty-eight million, eight hundred seventy-four thousand, three hundred thirteen".