1268830521 has 16 divisors (see below), whose sum is σ = 2148284800. Its totient is φ = 725045904.

The previous prime is 1268830487. The next prime is 1268830531. The reversal of 1268830521 is 1250388621.

It is a happy number.

1268830521 is a `hidden beast` number, since 1 + 26 + 88 + 30 + 521 = 666.

It is not a de Polignac number, because 1268830521 - 2¹⁵ = 1268797753 is a prime.

It is a super-2 number, since 2×1268830521² = 3219861782042262882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268830531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3356506 + ... + 3356883.

It is an arithmetic number, because the mean of its divisors is an integer number (134267800).

Almost surely, 2^1268830521 is an apocalyptic number.

It is an amenable number.

1268830521 is a deficient number, since it is larger than the sum of its proper divisors (879454279).

1268830521 is an equidigital number, since it uses as much as digits as its factorization.

1268830521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713405 (or 6713399 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1268830521 is about 35620.6473972610. The cubic root of 1268830521 is about 1082.5996248718.

The spelling of 1268830521 in words is "one billion, two hundred sixty-eight million, eight hundred thirty thousand, five hundred twenty-one".