187074485593 has 2 divisors, whose sum is σ = 187074485594. Its totient is φ = 187074485592.

The previous prime is 187074485569. The next prime is 187074485597. The reversal of 187074485593 is 395584470781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173215780864 + 13858704729 = 416192^2 + 117723^2 .

It is a cyclic number.

It is not a de Polignac number, because 187074485593 - 2²¹ = 187072388441 is a prime.

It is not a weakly prime, because it can be changed into another prime (187074485597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93537242796 + 93537242797.

It is an arithmetic number, because the mean of its divisors is an integer number (93537242797).

Almost surely, 2^187074485593 is an apocalyptic number.

It is an amenable number.

187074485593 is a deficient number, since it is larger than the sum of its proper divisors (1).

187074485593 is an equidigital number, since it uses as much as digits as its factorization.

187074485593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 187074485593 in words is "one hundred eighty-seven billion, seventy-four million, four hundred eighty-five thousand, five hundred ninety-three".