18001956974 has 8 divisors (see below), whose sum is σ = 27003991248. Its totient is φ = 9000626560.

The previous prime is 18001956913. The next prime is 18001956979. The reversal of 18001956974 is 47965910081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18001956979) 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, 106547 + ... + 217614.

It is an arithmetic number, because the mean of its divisors is an integer number (3375498906).

Almost surely, 2^18001956974 is an apocalyptic number.

18001956974 is a deficient number, since it is larger than the sum of its proper divisors (9002034274).

18001956974 is a wasteful number, since it uses less digits than its factorization.

18001956974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351930.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 18001956974 in words is "eighteen billion, one million, nine hundred fifty-six thousand, nine hundred seventy-four".