1630841904 has 40 divisors (see below), whose sum is σ = 4681121520. Its totient is φ = 543613824.

The previous prime is 1630841897. The next prime is 1630841911. The reversal of 1630841904 is 4091480361.

1630841904 is a `hidden beast` number, since 1 + 630 + 8 + 4 + 19 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1630841897) and next prime (1630841911).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1887117 + ... + 1887980.

It is an arithmetic number, because the mean of its divisors is an integer number (117028038).

Almost surely, 2^1630841904 is an apocalyptic number.

It is an amenable number.

1630841904 is an abundant number, since it is smaller than the sum of its proper divisors (3050279616).

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

1630841904 is a wasteful number, since it uses less digits than its factorization.

1630841904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775114 (or 3775102 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1630841904 is about 40383.6836358448. The cubic root of 1630841904 is about 1177.0745073066.

The spelling of 1630841904 in words is "one billion, six hundred thirty million, eight hundred forty-one thousand, nine hundred four".