1268993180 has 72 divisors (see below), whose sum is σ = 3338461728. Its totient is φ = 401611392.

The previous prime is 1268993177. The next prime is 1268993197. The reversal of 1268993180 is 813998621.

It is a super-2 number, since 2×1268993180² = 3220687381773024800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37064 + ... + 62543.

It is an arithmetic number, because the mean of its divisors is an integer number (46367524).

Almost surely, 2^1268993180 is an apocalyptic number.

1268993180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268993180 is an abundant number, since it is smaller than the sum of its proper divisors (2069468548).

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

1268993180 is a wasteful number, since it uses less digits than its factorization.

1268993180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99643 (or 99634 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 1268993180 is about 35622.9305363834. The cubic root of 1268993180 is about 1082.6458845430.

The spelling of 1268993180 in words is "one billion, two hundred sixty-eight million, nine hundred ninety-three thousand, one hundred eighty".