187113793 has 2 divisors, whose sum is σ = 187113794. Its totient is φ = 187113792.

The previous prime is 187113761. The next prime is 187113811. The reversal of 187113793 is 397311781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138839089 + 48274704 = 11783^2 + 6948^2 .

It is a cyclic number.

It is not a de Polignac number, because 187113793 - 2⁵ = 187113761 is a prime.

It is not a weakly prime, because it can be changed into another prime (187123793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93556896 + 93556897.

It is an arithmetic number, because the mean of its divisors is an integer number (93556897).

Almost surely, 2^187113793 is an apocalyptic number.

It is an amenable number.

187113793 is a deficient number, since it is larger than the sum of its proper divisors (1).

187113793 is an equidigital number, since it uses as much as digits as its factorization.

187113793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 40.

The square root of 187113793 is about 13678.9543825542. The cubic root of 187113793 is about 571.9638763517.

The spelling of 187113793 in words is "one hundred eighty-seven million, one hundred thirteen thousand, seven hundred ninety-three".