1984790140 has 24 divisors (see below), whose sum is σ = 4169636352. Its totient is φ = 793615680.

The previous prime is 1984790107. The next prime is 1984790207. The reversal of 1984790140 is 410974891.

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, 39877 + ... + 74563.

It is an arithmetic number, because the mean of its divisors is an integer number (173734848).

Almost surely, 2^1984790140 is an apocalyptic number.

1984790140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1984790140 is an abundant number, since it is smaller than the sum of its proper divisors (2184846212).

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

1984790140 is a wasteful number, since it uses less digits than its factorization.

1984790140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37557 (or 37555 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1984790140 is about 44550.9836030586. The cubic root of 1984790140 is about 1256.7190486631.

The spelling of 1984790140 in words is "one billion, nine hundred eighty-four million, seven hundred ninety thousand, one hundred forty".