1304156641 has 2 divisors, whose sum is σ = 1304156642. Its totient is φ = 1304156640.

The previous prime is 1304156629. The next prime is 1304156657. The reversal of 1304156641 is 1466514031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1290318241 + 13838400 = 35921^2 + 3720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304156641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304156681) 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 as a sum of consecutive naturals, namely, 652078320 + 652078321.

It is an arithmetic number, because the mean of its divisors is an integer number (652078321).

Almost surely, 2^1304156641 is an apocalyptic number.

It is an amenable number.

1304156641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304156641 is an equidigital number, since it uses as much as digits as its factorization.

1304156641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1304156641 is about 36113.1089910575. The cubic root of 1304156641 is about 1092.5548579121.

The spelling of 1304156641 in words is "one billion, three hundred four million, one hundred fifty-six thousand, six hundred forty-one".