1268939464 has 32 divisors (see below), whose sum is σ = 2616808320. Its totient is φ = 573201216.

The previous prime is 1268939411. The next prime is 1268939473. The reversal of 1268939464 is 4649398621.

It is a super-2 number, since 2×1268939464² = 3220414726593214592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 124914 + ... + 134689.

It is an arithmetic number, because the mean of its divisors is an integer number (81775260).

Almost surely, 2^1268939464 is an apocalyptic number.

It is an amenable number.

1268939464 is an abundant number, since it is smaller than the sum of its proper divisors (1347868856).

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

1268939464 is a wasteful number, since it uses less digits than its factorization.

1268939464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259669 (or 259665 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 1268939464 is about 35622.1765758355. The cubic root of 1268939464 is about 1082.6306083308.

The spelling of 1268939464 in words is "one billion, two hundred sixty-eight million, nine hundred thirty-nine thousand, four hundred sixty-four".