1630640802 has 32 divisors (see below), whose sum is σ = 3752208000. Its totient is φ = 462768768.

The previous prime is 1630640789. The next prime is 1630640839. The reversal of 1630640802 is 2080460361.

It is a self number, because there is not a number n which added to its sum of digits gives 1630640802.

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, 124027 + ... + 136542.

It is an arithmetic number, because the mean of its divisors is an integer number (117256500).

Almost surely, 2^1630640802 is an apocalyptic number.

1630640802 is an abundant number, since it is smaller than the sum of its proper divisors (2121567198).

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

1630640802 is a wasteful number, since it uses less digits than its factorization.

1630640802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260730.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1630640802 is about 40381.1936673497. The cubic root of 1630640802 is about 1177.0261229379.

The spelling of 1630640802 in words is "one billion, six hundred thirty million, six hundred forty thousand, eight hundred two".