1604280164 has 6 divisors (see below), whose sum is σ = 2807490294. Its totient is φ = 802140080.

The previous prime is 1604280149. The next prime is 1604280179. The reversal of 1604280164 is 4610824061.

It is an interprime number because it is at equal distance from previous prime (1604280149) and next prime (1604280179).

It can be written as a sum of positive squares in only one way, i.e., 1371961600 + 232318564 = 37040^2 + 15242^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1604280164.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200535017 + ... + 200535024.

It is an arithmetic number, because the mean of its divisors is an integer number (467915049).

Almost surely, 2^1604280164 is an apocalyptic number.

It is an amenable number.

1604280164 is a deficient number, since it is larger than the sum of its proper divisors (1203210130).

1604280164 is a wasteful number, since it uses less digits than its factorization.

1604280164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401070045 (or 401070043 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1604280164 is about 40053.4663169119. The cubic root of 1604280164 is about 1170.6491062962.

The spelling of 1604280164 in words is "one billion, six hundred four million, two hundred eighty thousand, one hundred sixty-four".