1304137681 has 8 divisors (see below), whose sum is σ = 1625937984. Its totient is φ = 1016211120.

The previous prime is 1304137621. The next prime is 1304137691. The reversal of 1304137681 is 1867314031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304137681 is a prime.

It is a super-2 number, since 2×1304137681² = 3401550182008115522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1304137621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8468350 + ... + 8468503.

It is an arithmetic number, because the mean of its divisors is an integer number (203242248).

Almost surely, 2^1304137681 is an apocalyptic number.

1304137681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1304137681 is a deficient number, since it is larger than the sum of its proper divisors (321800303).

1304137681 is a wasteful number, since it uses less digits than its factorization.

1304137681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16936871.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1304137681 is about 36112.8464815500. The cubic root of 1304137681 is about 1092.5495633179.

The spelling of 1304137681 in words is "one billion, three hundred four million, one hundred thirty-seven thousand, six hundred eighty-one".