1604135970 has 24 divisors (see below), whose sum is σ = 4170753756. Its totient is φ = 427769568.

The previous prime is 1604135969. The next prime is 1604135977. The reversal of 1604135970 is 795314061.

1604135970 is a `hidden beast` number, since 1 + 60 + 4 + 1 + 3 + 597 + 0 = 666.

1604135970 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1580778081 + 23357889 = 39759^2 + 4833^2 .

It is not an unprimeable number, because it can be changed into a prime (1604135977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8911777 + ... + 8911956.

Almost surely, 2^1604135970 is an apocalyptic number.

1604135970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1604135970 is an abundant number, since it is smaller than the sum of its proper divisors (2566617786).

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

1604135970 is a wasteful number, since it uses less digits than its factorization.

1604135970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17823746 (or 17823743 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1604135970 is about 40051.6662574730. Note that the first 3 decimals coincide. The cubic root of 1604135970 is about 1170.6140322822.

The spelling of 1604135970 in words is "one billion, six hundred four million, one hundred thirty-five thousand, nine hundred seventy".