18499999974 has 8 divisors (see below), whose sum is σ = 36999999960. Its totient is φ = 6166666656.

The previous prime is 18499999967. The next prime is 18500000011. The reversal of 18499999974 is 47999999481.

It is a happy number.

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

18499999974 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 18499999974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1541666659 + ... + 1541666670.

It is an arithmetic number, because the mean of its divisors is an integer number (4624999995).

Almost surely, 2^18499999974 is an apocalyptic number.

18499999974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18499999974 is a wasteful number, since it uses less digits than its factorization.

18499999974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083333334.

The product of its digits is 476171136, while the sum is 78.

The spelling of 18499999974 in words is "eighteen billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-four".