18028293874 has 8 divisors (see below), whose sum is σ = 27974938860. Its totient is φ = 8703314256.

The previous prime is 18028293827. The next prime is 18028293883. The reversal of 18028293874 is 47839282081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16629907849 + 1398386025 = 128957^2 + 37395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155416269 + ... + 155416384.

Almost surely, 2^18028293874 is an apocalyptic number.

18028293874 is a deficient number, since it is larger than the sum of its proper divisors (9946644986).

18028293874 is a wasteful number, since it uses less digits than its factorization.

18028293874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310832684.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 18028293874 in words is "eighteen billion, twenty-eight million, two hundred ninety-three thousand, eight hundred seventy-four".