1264407851 has 16 divisors (see below), whose sum is σ = 1453111296. Its totient is φ = 1077744096.

The previous prime is 1264407829. The next prime is 1264407863. The reversal of 1264407851 is 1587044621.

It is a cyclic number.

It is not a de Polignac number, because 1264407851 - 2⁶ = 1264407787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1264407811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738850 + ... + 1739576.

It is an arithmetic number, because the mean of its divisors is an integer number (90819456).

Almost surely, 2^1264407851 is an apocalyptic number.

1264407851 is a deficient number, since it is larger than the sum of its proper divisors (188703445).

1264407851 is an equidigital number, since it uses as much as digits as its factorization.

1264407851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1264407851 is about 35558.5130594630. The cubic root of 1264407851 is about 1081.3403143913.

The spelling of 1264407851 in words is "one billion, two hundred sixty-four million, four hundred seven thousand, eight hundred fifty-one".