1912880268 has 36 divisors (see below), whose sum is σ = 5207286448. Its totient is φ = 588578400.

The previous prime is 1912880257. The next prime is 1912880269. The reversal of 1912880268 is 8620882191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1912880268² = 7318221839407503648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1912880269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2043208 + ... + 2044143.

Almost surely, 2^1912880268 is an apocalyptic number.

1912880268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1912880268 is an abundant number, since it is smaller than the sum of its proper divisors (3294406180).

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

1912880268 is a wasteful number, since it uses less digits than its factorization.

1912880268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087374 (or 4087369 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 1912880268 is about 43736.4866901767. The cubic root of 1912880268 is about 1241.3548034776.

The spelling of 1912880268 in words is "one billion, nine hundred twelve million, eight hundred eighty thousand, two hundred sixty-eight".