1258380731 has 6 divisors (see below), whose sum is σ = 1303270332. Its totient is φ = 1214987480.

The previous prime is 1258380677. The next prime is 1258380751. The reversal of 1258380731 is 1370838521.

It is a happy number.

It is not a de Polignac number, because 1258380731 - 2¹⁴ = 1258364347 is a prime.

It is a super-2 number, since 2×1258380731² = 3167044128304188722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1258380751) 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, 747305 + ... + 748986.

It is an arithmetic number, because the mean of its divisors is an integer number (217211722).

Almost surely, 2^1258380731 is an apocalyptic number.

1258380731 is a deficient number, since it is larger than the sum of its proper divisors (44889601).

1258380731 is an equidigital number, since it uses as much as digits as its factorization.

1258380731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496349 (or 1496320 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1258380731 is about 35473.6624976897. The cubic root of 1258380731 is about 1079.6194163697.

The spelling of 1258380731 in words is "one billion, two hundred fifty-eight million, three hundred eighty thousand, seven hundred thirty-one".