1634288994 has 32 divisors (see below), whose sum is σ = 3911120640. Its totient is φ = 502857936.

The previous prime is 1634288977. The next prime is 1634289011. The reversal of 1634288994 is 4998824361.

It is an interprime number because it is at equal distance from previous prime (1634288977) and next prime (1634289011).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1634288994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1163322 + ... + 1164725.

It is an arithmetic number, because the mean of its divisors is an integer number (122222520).

Almost surely, 2^1634288994 is an apocalyptic number.

1634288994 is an abundant number, since it is smaller than the sum of its proper divisors (2276831646).

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

1634288994 is a wasteful number, since it uses less digits than its factorization.

1634288994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328071 (or 2328065 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1634288994 is about 40426.3403488369. The cubic root of 1634288994 is about 1177.9032462045.

The spelling of 1634288994 in words is "one billion, six hundred thirty-four million, two hundred eighty-eight thousand, nine hundred ninety-four".