1630923804 has 18 divisors (see below), whose sum is σ = 4122613040. Its totient is φ = 543641256.

The previous prime is 1630923787. The next prime is 1630923817. The reversal of 1630923804 is 4083290361.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×1630923804³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 45303439 = 1630923804 / (1 + 6 + 3 + 0 + 9 + 2 + 3 + 8 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22651684 + ... + 22651755.

Almost surely, 2^1630923804 is an apocalyptic number.

It is an amenable number.

1630923804 is an abundant number, since it is smaller than the sum of its proper divisors (2491689236).

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

1630923804 is a wasteful number, since it uses less digits than its factorization.

1630923804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45303449 (or 45303444 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1630923804 is about 40384.6976465096. The cubic root of 1630923804 is about 1177.0942109922.

The spelling of 1630923804 in words is "one billion, six hundred thirty million, nine hundred twenty-three thousand, eight hundred four".