1269013152 has 144 divisors (see below), whose sum is σ = 3699362016. Its totient is φ = 380582400.

The previous prime is 1269013147. The next prime is 1269013153. The reversal of 1269013152 is 2513109621.

It is a super-2 number, since 2×1269013152² = 3220788759897950208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1269013153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1242402 + ... + 1243422.

It is an arithmetic number, because the mean of its divisors is an integer number (25690014).

Almost surely, 2^1269013152 is an apocalyptic number.

1269013152 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 1269013152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849681008).

1269013152 is an abundant number, since it is smaller than the sum of its proper divisors (2430348864).

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

1269013152 is a wasteful number, since it uses less digits than its factorization.

1269013152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1269013152 is about 35623.2108603366. The cubic root of 1269013152 is about 1082.6515642399.

The spelling of 1269013152 in words is "one billion, two hundred sixty-nine million, thirteen thousand, one hundred fifty-two".