185461191457 has 2 divisors, whose sum is σ = 185461191458. Its totient is φ = 185461191456.

The previous prime is 185461191431. The next prime is 185461191497. The reversal of 185461191457 is 754191164581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102226633441 + 83234558016 = 319729^2 + 288504^2 .

It is a cyclic number.

It is not a de Polignac number, because 185461191457 - 2⁷ = 185461191329 is a prime.

It is not a weakly prime, because it can be changed into another prime (185461191407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92730595728 + 92730595729.

It is an arithmetic number, because the mean of its divisors is an integer number (92730595729).

Almost surely, 2^185461191457 is an apocalyptic number.

It is an amenable number.

185461191457 is a deficient number, since it is larger than the sum of its proper divisors (1).

185461191457 is an equidigital number, since it uses as much as digits as its factorization.

185461191457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 52.

The spelling of 185461191457 in words is "one hundred eighty-five billion, four hundred sixty-one million, one hundred ninety-one thousand, four hundred fifty-seven".