18898450074 has 24 divisors (see below), whose sum is σ = 46796162400. Its totient is φ = 5399557128.

The previous prime is 18898450057. The next prime is 18898450093. The reversal of 18898450074 is 47005489881.

18898450074 is a `hidden beast` number, since 188 + 9 + 8 + 450 + 0 + 7 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18898450074.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74993724 + ... + 74993975.

It is an arithmetic number, because the mean of its divisors is an integer number (1949840100).

Almost surely, 2^18898450074 is an apocalyptic number.

18898450074 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18898450074 is an abundant number, since it is smaller than the sum of its proper divisors (27897712326).

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

18898450074 is a wasteful number, since it uses less digits than its factorization.

18898450074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149987714 (or 149987711 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 18898450074 in words is "eighteen billion, eight hundred ninety-eight million, four hundred fifty thousand, seventy-four".