1264281696 has 120 divisors (see below), whose sum is σ = 3728927664. Its totient is φ = 420215040.

The previous prime is 1264281673. The next prime is 1264281727. The reversal of 1264281696 is 6961824621.

1264281696 is a `hidden beast` number, since 126 + 428 + 16 + 96 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1635166 + ... + 1635938.

Almost surely, 2^1264281696 is an apocalyptic number.

1264281696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1264281696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864463832).

1264281696 is an abundant number, since it is smaller than the sum of its proper divisors (2464645968).

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

1264281696 is an equidigital number, since it uses as much as digits as its factorization.

1264281696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1409 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1264281696 is about 35556.7391080791. The cubic root of 1264281696 is about 1081.3043499872.

The spelling of 1264281696 in words is "one billion, two hundred sixty-four million, two hundred eighty-one thousand, six hundred ninety-six".