18198611374 has 8 divisors (see below), whose sum is σ = 27626807880. Its totient is φ = 8989675416.

The previous prime is 18198611297. The next prime is 18198611381. The reversal of 18198611374 is 47311689181.

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

It is a congruent number.

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, 54814929 + ... + 54815260.

It is an arithmetic number, because the mean of its divisors is an integer number (3453350985).

Almost surely, 2^18198611374 is an apocalyptic number.

18198611374 is a deficient number, since it is larger than the sum of its proper divisors (9428196506).

18198611374 is a wasteful number, since it uses less digits than its factorization.

18198611374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109630274.

The product of its digits is 290304, while the sum is 49.

The spelling of 18198611374 in words is "eighteen billion, one hundred ninety-eight million, six hundred eleven thousand, three hundred seventy-four".