1258873820 has 24 divisors (see below), whose sum is σ = 2662937424. Its totient is φ = 499872896.

The previous prime is 1258873813. The next prime is 1258873843. The reversal of 1258873820 is 283788521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226982 + ... + 232461.

It is an arithmetic number, because the mean of its divisors is an integer number (110955726).

Almost surely, 2^1258873820 is an apocalyptic number.

1258873820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1258873820 is an abundant number, since it is smaller than the sum of its proper divisors (1404063604).

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

1258873820 is a wasteful number, since it uses less digits than its factorization.

1258873820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459589 (or 459587 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 1258873820 is about 35480.6118887485. The cubic root of 1258873820 is about 1079.7604121028.

The spelling of 1258873820 in words is "one billion, two hundred fifty-eight million, eight hundred seventy-three thousand, eight hundred twenty".