1129512440 has 64 divisors (see below), whose sum is σ = 2907403200. Its totient is φ = 386869248.

The previous prime is 1129512427. The next prime is 1129512443. The reversal of 1129512440 is 442159211.

It is a super-2 number, since 2×1129512440² = 2551596704229507200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129512443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466112 + ... + 468528.

It is an arithmetic number, because the mean of its divisors is an integer number (45428175).

Almost surely, 2^1129512440 is an apocalyptic number.

1129512440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129512440 is an abundant number, since it is smaller than the sum of its proper divisors (1777890760).

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

1129512440 is a wasteful number, since it uses less digits than its factorization.

1129512440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104 (or 4100 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1129512440 is about 33608.2198278933. The cubic root of 1129512440 is about 1041.4306125238.

The spelling of 1129512440 in words is "one billion, one hundred twenty-nine million, five hundred twelve thousand, four hundred forty".