185453047157 has 4 divisors (see below), whose sum is σ = 211946339616. Its totient is φ = 158959754700.

The previous prime is 185453047139. The next prime is 185453047159. The reversal of 185453047157 is 751740354581.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751740354581 = 372293 ⋅2019217.

It is a cyclic number.

It is not a de Polignac number, because 185453047157 - 2¹⁸ = 185452785013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185453047159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13246646219 + ... + 13246646232.

It is an arithmetic number, because the mean of its divisors is an integer number (52986584904).

Almost surely, 2^185453047157 is an apocalyptic number.

It is an amenable number.

185453047157 is a deficient number, since it is larger than the sum of its proper divisors (26493292459).

185453047157 is an equidigital number, since it uses as much as digits as its factorization.

185453047157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26493292458.

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 185453047157 in words is "one hundred eighty-five billion, four hundred fifty-three million, forty-seven thousand, one hundred fifty-seven".