1258826870 has 16 divisors (see below), whose sum is σ = 2589586848. Its totient is φ = 431597760.

The previous prime is 1258826861. The next prime is 1258826873. The reversal of 1258826870 is 786288521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258826873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8991551 + ... + 8991690.

It is an arithmetic number, because the mean of its divisors is an integer number (161849178).

Almost surely, 2^1258826870 is an apocalyptic number.

1258826870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1258826870 is an abundant number, since it is smaller than the sum of its proper divisors (1330759978).

1258826870 is a wasteful number, since it uses less digits than its factorization.

1258826870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17983255.

The product of its (nonzero) digits is 430080, while the sum is 47.

The square root of 1258826870 is about 35479.9502536292. The cubic root of 1258826870 is about 1079.7469886284.

The spelling of 1258826870 in words is "one billion, two hundred fifty-eight million, eight hundred twenty-six thousand, eight hundred seventy".