1604655402 has 32 divisors (see below), whose sum is σ = 3673158144. Its totient is φ = 457801200.

The previous prime is 1604655379. The next prime is 1604655443. The reversal of 1604655402 is 2045564061.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1377 + ... + 56667.

It is an arithmetic number, because the mean of its divisors is an integer number (114786192).

Almost surely, 2^1604655402 is an apocalyptic number.

1604655402 is an abundant number, since it is smaller than the sum of its proper divisors (2068502742).

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

1604655402 is a wasteful number, since it uses less digits than its factorization.

1604655402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55994.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1604655402 is about 40058.1502568454. The cubic root of 1604655402 is about 1170.7403700284.

The spelling of 1604655402 in words is "one billion, six hundred four million, six hundred fifty-five thousand, four hundred two".