1268764416 has 54 divisors (see below), whose sum is σ = 3658167240. Its totient is φ = 422920704.

The previous prime is 1268764397. The next prime is 1268764423. The reversal of 1268764416 is 6144678621.

1268764416 is a `hidden beast` number, since 126 + 87 + 6 + 441 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273036 + ... + 277643.

Almost surely, 2^1268764416 is an apocalyptic number.

1268764416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1268764416 is an abundant number, since it is smaller than the sum of its proper divisors (2389402824).

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

1268764416 is an equidigital number, since it uses as much as digits as its factorization.

1268764416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550701 (or 550684 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1268764416 is about 35619.7194823317. The cubic root of 1268764416 is about 1082.5808237028.

The spelling of 1268764416 in words is "one billion, two hundred sixty-eight million, seven hundred sixty-four thousand, four hundred sixteen".