1604661260 has 12 divisors (see below), whose sum is σ = 3369788688. Its totient is φ = 641864496.

The previous prime is 1604661257. The next prime is 1604661269. The reversal of 1604661260 is 621664061.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1604661269) 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, 40116512 + ... + 40116551.

It is an arithmetic number, because the mean of its divisors is an integer number (280815724).

Almost surely, 2^1604661260 is an apocalyptic number.

1604661260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1604661260 is an abundant number, since it is smaller than the sum of its proper divisors (1765127428).

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

1604661260 is a wasteful number, since it uses less digits than its factorization.

1604661260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80233072 (or 80233070 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1604661260 is about 40058.2233754818. The cubic root of 1604661260 is about 1170.7417946725.

The spelling of 1604661260 in words is "one billion, six hundred four million, six hundred sixty-one thousand, two hundred sixty".