1304837057 has 6 divisors (see below), whose sum is σ = 1381749894. Its totient is φ = 1227941760.

The previous prime is 1304837033. The next prime is 1304837071. The reversal of 1304837057 is 7507384031.

It can be written as a sum of positive squares in 3 ways, for example, as 2421136 + 1302415921 = 1556^2 + 36089^2 .

It is not a de Polignac number, because 1304837057 - 2²⁰ = 1303788481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304837057.

It is not an unprimeable number, because it can be changed into a prime (1304837857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144557 + ... + 153317.

It is an arithmetic number, because the mean of its divisors is an integer number (230291649).

Almost surely, 2^1304837057 is an apocalyptic number.

1304837057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1304837057 is a deficient number, since it is larger than the sum of its proper divisors (76912837).

1304837057 is an frugal number, since it uses more digits than its factorization.

1304837057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17539 (or 8778 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 1304837057 is about 36122.5283860363. The cubic root of 1304837057 is about 1092.7448306340.

It can be divided in two parts, 13048 and 37057, that added together give a palindrome (50105).

The spelling of 1304837057 in words is "one billion, three hundred four million, eight hundred thirty-seven thousand, fifty-seven".