1838236980 has 24 divisors (see below), whose sum is σ = 5147063712. Its totient is φ = 490196512.

The previous prime is 1838236963. The next prime is 1838236999. The reversal of 1838236980 is 896328381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15318582 + ... + 15318701.

It is an arithmetic number, because the mean of its divisors is an integer number (214460988).

Almost surely, 2^1838236980 is an apocalyptic number.

1838236980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838236980 is an abundant number, since it is smaller than the sum of its proper divisors (3308826732).

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

1838236980 is a wasteful number, since it uses less digits than its factorization.

1838236980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30637295 (or 30637293 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 1838236980 is about 42874.6659462205. The cubic root of 1838236980 is about 1224.9936370626.

The spelling of 1838236980 in words is "one billion, eight hundred thirty-eight million, two hundred thirty-six thousand, nine hundred eighty".