1604263464 has 48 divisors (see below), whose sum is σ = 4462316820. Its totient is φ = 520300800.

The previous prime is 1604263439. The next prime is 1604263471. The reversal of 1604263464 is 4643624061.

1604263464 is a `hidden beast` number, since 1 + 604 + 2 + 6 + 3 + 46 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1072038564 + 532224900 = 32742^2 + 23070^2 .

It is a super-2 number, since 2×1604263464² = 5147322523850558592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298437 + ... + 303764.

Almost surely, 2^1604263464 is an apocalyptic number.

It is an amenable number.

1604263464 is an abundant number, since it is smaller than the sum of its proper divisors (2858053356).

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

1604263464 is a wasteful number, since it uses less digits than its factorization.

1604263464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602250 (or 602243 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 1604263464 is about 40053.2578450243. The cubic root of 1604263464 is about 1170.6450442651.

It can be divided in two parts, 160 and 4263464, that added together give a palindrome (4263624).

The spelling of 1604263464 in words is "one billion, six hundred four million, two hundred sixty-three thousand, four hundred sixty-four".