1629408904 has 16 divisors (see below), whose sum is σ = 3058361820. Its totient is φ = 813845760.

The previous prime is 1629408901. The next prime is 1629408917. The reversal of 1629408904 is 4098049261.

It can be written as a sum of positive squares in 2 ways, for example, as 1474406404 + 155002500 = 38398^2 + 12450^2 .

It is not an unprimeable number, because it can be changed into a prime (1629408901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99237 + ... + 114484.

Almost surely, 2^1629408904 is an apocalyptic number.

It is an amenable number.

1629408904 is a deficient number, since it is larger than the sum of its proper divisors (1428952916).

1629408904 is a wasteful number, since it uses less digits than its factorization.

1629408904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214680 (or 214676 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1629408904 is about 40365.9374225349. The cubic root of 1629408904 is about 1176.7296461550.

The spelling of 1629408904 in words is "one billion, six hundred twenty-nine million, four hundred eight thousand, nine hundred four".