1264785364 has 24 divisors (see below), whose sum is σ = 2311602048. Its totient is φ = 604375200.

The previous prime is 1264785349. The next prime is 1264785367. The reversal of 1264785364 is 4635874621.

It is a super-2 number, since 2×1264785364² = 3199364033977224992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264785367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114409 + ... + 124975.

It is an arithmetic number, because the mean of its divisors is an integer number (96316752).

Almost surely, 2^1264785364 is an apocalyptic number.

It is an amenable number.

1264785364 is a deficient number, since it is larger than the sum of its proper divisors (1046816684).

1264785364 is a wasteful number, since it uses less digits than its factorization.

1264785364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895 (or 11893 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 1264785364 is about 35563.8209983123. The cubic root of 1264785364 is about 1081.4479219182.

The spelling of 1264785364 in words is "one billion, two hundred sixty-four million, seven hundred eighty-five thousand, three hundred sixty-four".