18057748191 has 16 divisors (see below), whose sum is σ = 27585201408. Its totient is φ = 10292976000.

The previous prime is 18057748187. The next prime is 18057748231. The reversal of 18057748191 is 19184775081.

It is not a de Polignac number, because 18057748191 - 2² = 18057748187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18057748171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063765 + ... + 1080606.

It is an arithmetic number, because the mean of its divisors is an integer number (1724075088).

Almost surely, 2^18057748191 is an apocalyptic number.

18057748191 is a deficient number, since it is larger than the sum of its proper divisors (9527453217).

18057748191 is a wasteful number, since it uses less digits than its factorization.

18057748191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144782.

The product of its (nonzero) digits is 564480, while the sum is 51.

The spelling of 18057748191 in words is "eighteen billion, fifty-seven million, seven hundred forty-eight thousand, one hundred ninety-one".