1258015013 has 8 divisors (see below), whose sum is σ = 1289535576. Its totient is φ = 1227264480.

The previous prime is 1258015007. The next prime is 1258015037. The reversal of 1258015013 is 3105108521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1103435524 + 154579489 = 33218^2 + 12433^2 .

It is not a de Polignac number, because 1258015013 - 2⁴ = 1258014997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258015813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59795 + ... + 78047.

It is an arithmetic number, because the mean of its divisors is an integer number (161191947).

Almost surely, 2^1258015013 is an apocalyptic number.

It is an amenable number.

1258015013 is a deficient number, since it is larger than the sum of its proper divisors (31520563).

1258015013 is an frugal number, since it uses more digits than its factorization.

1258015013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18376 (or 18294 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1258015013 is about 35468.5073410201. The cubic root of 1258015013 is about 1079.5148177905.

The spelling of 1258015013 in words is "one billion, two hundred fifty-eight million, fifteen thousand, thirteen".