1258481377 has 2 divisors, whose sum is σ = 1258481378. Its totient is φ = 1258481376.

The previous prime is 1258481327. The next prime is 1258481431. The reversal of 1258481377 is 7731848521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 890186896 + 368294481 = 29836^2 + 19191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1258481377 is a prime.

It is a super-2 number, since 2×1258481377² = 3167550752511632258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1258481327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629240688 + 629240689.

It is an arithmetic number, because the mean of its divisors is an integer number (629240689).

Almost surely, 2^1258481377 is an apocalyptic number.

It is an amenable number.

1258481377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258481377 is an equidigital number, since it uses as much as digits as its factorization.

1258481377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 46.

The square root of 1258481377 is about 35475.0810710842. The cubic root of 1258481377 is about 1079.6481984588.

It can be divided in two parts, 12584 and 81377, that added together give a triangular number (93961 = T₄₃₃).

The spelling of 1258481377 in words is "one billion, two hundred fifty-eight million, four hundred eighty-one thousand, three hundred seventy-seven".