1998955376 has 20 divisors (see below), whose sum is σ = 4225065144. Its totient is φ = 908616000.

The previous prime is 1998955333. The next prime is 1998955391. The reversal of 1998955376 is 6735598991.

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, 5678675 + ... + 5679026.

Almost surely, 2^1998955376 is an apocalyptic number.

1998955376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1998955376 is an abundant number, since it is smaller than the sum of its proper divisors (2226109768).

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

1998955376 is a wasteful number, since it uses less digits than its factorization.

1998955376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357720 (or 11357714 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 62.

The square root of 1998955376 is about 44709.6787731695. The cubic root of 1998955376 is about 1259.7016543983.

The spelling of 1998955376 in words is "one billion, nine hundred ninety-eight million, nine hundred fifty-five thousand, three hundred seventy-six".