187035254993 has 2 divisors, whose sum is σ = 187035254994. Its totient is φ = 187035254992.

The previous prime is 187035254983. The next prime is 187035255073. The reversal of 187035254993 is 399452530781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165658768144 + 21376486849 = 407012^2 + 146207^2 .

It is a cyclic number.

It is not a de Polignac number, because 187035254993 - 2¹⁰ = 187035253969 is a prime.

It is a super-2 number, since 2×187035254993² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (187035254983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93517627496 + 93517627497.

It is an arithmetic number, because the mean of its divisors is an integer number (93517627497).

Almost surely, 2^187035254993 is an apocalyptic number.

It is an amenable number.

187035254993 is a deficient number, since it is larger than the sum of its proper divisors (1).

187035254993 is an equidigital number, since it uses as much as digits as its factorization.

187035254993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 187035254993 in words is "one hundred eighty-seven billion, thirty-five million, two hundred fifty-four thousand, nine hundred ninety-three".