1129440492 has 36 divisors (see below), whose sum is σ = 3022915896. Its totient is φ = 354334080.

The previous prime is 1129440463. The next prime is 1129440563. The reversal of 1129440492 is 2940449211.

1129440492 is a `hidden beast` number, since 1 + 129 + 4 + 40 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922134 + ... + 923357.

It is an arithmetic number, because the mean of its divisors is an integer number (83969886).

Almost surely, 2^1129440492 is an apocalyptic number.

1129440492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1129440492 is an abundant number, since it is smaller than the sum of its proper divisors (1893475404).

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

1129440492 is a wasteful number, since it uses less digits than its factorization.

1129440492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845518 (or 1845513 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1129440492 is about 33607.1494179438. The cubic root of 1129440492 is about 1041.4084996079.

The spelling of 1129440492 in words is "one billion, one hundred twenty-nine million, four hundred forty thousand, four hundred ninety-two".