1264119912 has 128 divisors (see below), whose sum is σ = 3863203200. Its totient is φ = 382979520.

The previous prime is 1264119869. The next prime is 1264119917. The reversal of 1264119912 is 2199114621.

It is a happy number.

1264119912 is a `hidden beast` number, since 1 + 2 + 641 + 1 + 9 + 9 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (1264119917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285298 + ... + 289694.

It is an arithmetic number, because the mean of its divisors is an integer number (30181275).

Almost surely, 2^1264119912 is an apocalyptic number.

1264119912 is a gapful number since it is divisible by the number (12) 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 1264119912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931601600).

1264119912 is an abundant number, since it is smaller than the sum of its proper divisors (2599083288).

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

1264119912 is a wasteful number, since it uses less digits than its factorization.

1264119912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445 (or 4413 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 1264119912 is about 35554.4640235231. The cubic root of 1264119912 is about 1081.2582249277.

The spelling of 1264119912 in words is "one billion, two hundred sixty-four million, one hundred nineteen thousand, nine hundred twelve".