1264774620 has 48 divisors (see below), whose sum is σ = 3561183360. Its totient is φ = 335386176.

The previous prime is 1264774613. The next prime is 1264774631. The reversal of 1264774620 is 264774621.

It is a super-2 number, since 2×1264774620² = 3199309678792288800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48142 + ... + 69621.

It is an arithmetic number, because the mean of its divisors is an integer number (74191320).

Almost surely, 2^1264774620 is an apocalyptic number.

1264774620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264774620 is an abundant number, since it is smaller than the sum of its proper divisors (2296408740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264774620 is a wasteful number, since it uses less digits than its factorization.

1264774620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117954 (or 117952 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 1264774620 is about 35563.6699456060. The cubic root of 1264774620 is about 1081.4448597097. Note that the first 3 decimals are identical.

Subtracting from 1264774620 its reverse (264774621), we obtain a palindrome (999999999).

The spelling of 1264774620 in words is "one billion, two hundred sixty-four million, seven hundred seventy-four thousand, six hundred twenty".