1604429776 has 10 divisors (see below), whose sum is σ = 3108582722. Its totient is φ = 802214880.

The previous prime is 1604429773. The next prime is 1604429777. The reversal of 1604429776 is 6779244061.

It can be written as a sum of positive squares in only one way, i.e., 1357185600 + 247244176 = 36840^2 + 15724^2 .

It is a super-2 number, since 2×1604429776² = 5148389812230820352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604429773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50138415 + ... + 50138446.

Almost surely, 2^1604429776 is an apocalyptic number.

1604429776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1604429776 is a deficient number, since it is larger than the sum of its proper divisors (1504152946).

1604429776 is a wasteful number, since it uses less digits than its factorization.

1604429776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100276869 (or 100276863 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 1604429776 is about 40055.3339269566. Note that the first 3 decimals coincide. The cubic root of 1604429776 is about 1170.6854959730.

The spelling of 1604429776 in words is "one billion, six hundred four million, four hundred twenty-nine thousand, seven hundred seventy-six".