1162255992 has 64 divisors (see below), whose sum is σ = 3069360000. Its totient is φ = 365733504.

The previous prime is 1162255957. The next prime is 1162255993. The reversal of 1162255992 is 2995522611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162255993) 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, 129259 + ... + 137957.

It is an arithmetic number, because the mean of its divisors is an integer number (47958750).

Almost surely, 2^1162255992 is an apocalyptic number.

1162255992 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 1162255992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534680000).

1162255992 is an abundant number, since it is smaller than the sum of its proper divisors (1907104008).

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

1162255992 is a wasteful number, since it uses less digits than its factorization.

1162255992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020 (or 9016 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 1162255992 is about 34091.8757477496. The cubic root of 1162255992 is about 1051.3982858279.

The spelling of 1162255992 in words is "one billion, one hundred sixty-two million, two hundred fifty-five thousand, nine hundred ninety-two".