1264769009 has 16 divisors (see below), whose sum is σ = 1531623168. Its totient is φ = 1019553792.

The previous prime is 1264768949. The next prime is 1264769021. The reversal of 1264769009 is 9009674621.

It is a cyclic number.

It is not a de Polignac number, because 1264769009 - 2⁸ = 1264768753 is a prime.

It is a super-2 number, since 2×1264769009² = 3199281292253684162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1264769089) 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, 198812 + ... + 205074.

It is an arithmetic number, because the mean of its divisors is an integer number (95726448).

Almost surely, 2^1264769009 is an apocalyptic number.

It is an amenable number.

1264769009 is a deficient number, since it is larger than the sum of its proper divisors (266854159).

1264769009 is a wasteful number, since it uses less digits than its factorization.

1264769009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1264769009 is about 35563.5910588343. The cubic root of 1264769009 is about 1081.4432604798.

The spelling of 1264769009 in words is "one billion, two hundred sixty-four million, seven hundred sixty-nine thousand, nine".