1264152789 has 12 divisors (see below), whose sum is σ = 1828846656. Its totient is φ = 841453992.

The previous prime is 1264152787. The next prime is 1264152797. The reversal of 1264152789 is 9872514621.

1264152789 is a `hidden beast` number, since 1 + 2 + 6 + 41 + 527 + 89 = 666.

It is not a de Polignac number, because 1264152789 - 2¹ = 1264152787 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264152781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103437 + ... + 115010.

It is an arithmetic number, because the mean of its divisors is an integer number (152403888).

Almost surely, 2^1264152789 is an apocalyptic number.

It is an amenable number.

1264152789 is a deficient number, since it is larger than the sum of its proper divisors (564693867).

1264152789 is a wasteful number, since it uses less digits than its factorization.

1264152789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219096 (or 219093 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1264152789 is about 35554.9263675232. The cubic root of 1264152789 is about 1081.2675985686.

The spelling of 1264152789 in words is "one billion, two hundred sixty-four million, one hundred fifty-two thousand, seven hundred eighty-nine".