18468492137 has 4 divisors (see below), whose sum is σ = 19271470080. Its totient is φ = 17665514196.

The previous prime is 18468492101. The next prime is 18468492143. The reversal of 18468492137 is 73129486481.

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.

It is a cyclic number.

It is not a de Polignac number, because 18468492137 - 2¹² = 18468488041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18468492437) 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, 401488937 + ... + 401488982.

It is an arithmetic number, because the mean of its divisors is an integer number (4817867520).

Almost surely, 2^18468492137 is an apocalyptic number.

It is an amenable number.

18468492137 is a deficient number, since it is larger than the sum of its proper divisors (802977943).

18468492137 is an equidigital number, since it uses as much as digits as its factorization.

18468492137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802977942.

The product of its digits is 2322432, while the sum is 53.

The spelling of 18468492137 in words is "eighteen billion, four hundred sixty-eight million, four hundred ninety-two thousand, one hundred thirty-seven".