1268015100 has 72 divisors (see below), whose sum is σ = 4002327168. Its totient is φ = 307396800.

The previous prime is 1268015087. The next prime is 1268015167. The reversal of 1268015100 is 15108621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188824 + ... + 195423.

Almost surely, 2^1268015100 is an apocalyptic number.

1268015100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268015100 is an abundant number, since it is smaller than the sum of its proper divisors (2734312068).

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

1268015100 is a wasteful number, since it uses less digits than its factorization.

1268015100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384275 (or 384268 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1268015100 is about 35609.1996540220. The cubic root of 1268015100 is about 1082.3676622815.

The spelling of 1268015100 in words is "one billion, two hundred sixty-eight million, fifteen thousand, one hundred".