1998615874 has 8 divisors (see below), whose sum is σ = 3061709568. Its totient is φ = 978046020.

The previous prime is 1998615851. The next prime is 1998615943. The reversal of 1998615874 is 4785168991.

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, 10630842 + ... + 10631029.

It is an arithmetic number, because the mean of its divisors is an integer number (382713696).

Almost surely, 2^1998615874 is an apocalyptic number.

1998615874 is a deficient number, since it is larger than the sum of its proper divisors (1063093694).

1998615874 is a wasteful number, since it uses less digits than its factorization.

1998615874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21261920.

The product of its digits is 4354560, while the sum is 58.

The square root of 1998615874 is about 44705.8818725232. The cubic root of 1998615874 is about 1259.6303345729.

The spelling of 1998615874 in words is "one billion, nine hundred ninety-eight million, six hundred fifteen thousand, eight hundred seventy-four".