1118139792 has 160 divisors (see below), whose sum is σ = 3617387520. Its totient is φ = 289128960.

The previous prime is 1118139787. The next prime is 1118139817. The reversal of 1118139792 is 2979318111.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045434 + ... + 1046502.

It is an arithmetic number, because the mean of its divisors is an integer number (22608672).

Almost surely, 2^1118139792 is an apocalyptic number.

1118139792 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 1118139792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1808693760).

1118139792 is an abundant number, since it is smaller than the sum of its proper divisors (2499247728).

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

1118139792 is a wasteful number, since it uses less digits than its factorization.

1118139792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1375 counting only the distinct ones).

The product of its digits is 27216, while the sum is 42.

The square root of 1118139792 is about 33438.5973390033. The cubic root of 1118139792 is about 1037.9235542025.

The spelling of 1118139792 in words is "one billion, one hundred eighteen million, one hundred thirty-nine thousand, seven hundred ninety-two".