1994908790 has 64 divisors (see below), whose sum is σ = 4199731200. Its totient is φ = 668169216.

The previous prime is 1994908789. The next prime is 1994908793. The reversal of 1994908790 is 978094991.

It is a super-2 number, since 2×1994908790² = 7959322160838528200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994908793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534551 + ... + 538269.

It is an arithmetic number, because the mean of its divisors is an integer number (65620800).

Almost surely, 2^1994908790 is an apocalyptic number.

1994908790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1994908790 is an abundant number, since it is smaller than the sum of its proper divisors (2204822410).

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

1994908790 is a wasteful number, since it uses less digits than its factorization.

1994908790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 1994908790 is about 44664.4018206894. The cubic root of 1994908790 is about 1258.8510543439.

The spelling of 1994908790 in words is "one billion, nine hundred ninety-four million, nine hundred eight thousand, seven hundred ninety".