1146631992 has 64 divisors (see below), whose sum is σ = 3158213760. Its totient is φ = 344016000.

The previous prime is 1146631987. The next prime is 1146632017. The reversal of 1146631992 is 2991366411.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5163 + ... + 48165.

It is an arithmetic number, because the mean of its divisors is an integer number (49347090).

Almost surely, 2^1146631992 is an apocalyptic number.

1146631992 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 1146631992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579106880).

1146631992 is an abundant number, since it is smaller than the sum of its proper divisors (2011581768).

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

1146631992 is a wasteful number, since it uses less digits than its factorization.

1146631992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43124 (or 43120 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 1146631992 is about 33861.9549347051. The cubic root of 1146631992 is about 1046.6657626851.

It can be divided in two parts, 11466319 and 92, that added together give a palindrome (11466411).

The spelling of 1146631992 in words is "one billion, one hundred forty-six million, six hundred thirty-one thousand, nine hundred ninety-two".