1258167872 has 28 divisors (see below), whose sum is σ = 2688730716. Its totient is φ = 580692480.

The previous prime is 1258167853. The next prime is 1258167881. The reversal of 1258167872 is 2787618521.

It can be written as a sum of positive squares in 2 ways, for example, as 541213696 + 716954176 = 23264^2 + 26776^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755279 + ... + 756942.

It is an arithmetic number, because the mean of its divisors is an integer number (96026097).

Almost surely, 2^1258167872 is an apocalyptic number.

It is an amenable number.

1258167872 is an abundant number, since it is smaller than the sum of its proper divisors (1430562844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1258167872 is a wasteful number, since it uses less digits than its factorization.

1258167872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512246 (or 1512236 counting only the distinct ones).

The product of its digits is 376320, while the sum is 47.

The square root of 1258167872 is about 35470.6621308371. The cubic root of 1258167872 is about 1079.5585392805.

The spelling of 1258167872 in words is "one billion, two hundred fifty-eight million, one hundred sixty-seven thousand, eight hundred seventy-two".