1232159856 has 40 divisors (see below), whose sum is σ = 3192243600. Its totient is φ = 409537536.

The previous prime is 1232159833. The next prime is 1232159857. The reversal of 1232159856 is 6589512321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232159857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20025 + ... + 53528.

It is an arithmetic number, because the mean of its divisors is an integer number (79806090).

Almost surely, 2^1232159856 is an apocalyptic number.

1232159856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1232159856 is an abundant number, since it is smaller than the sum of its proper divisors (1960083744).

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

1232159856 is a wasteful number, since it uses less digits than its factorization.

1232159856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73913 (or 73907 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 1232159856 is about 35102.1346359449. The cubic root of 1232159856 is about 1072.0680462858.

The spelling of 1232159856 in words is "one billion, two hundred thirty-two million, one hundred fifty-nine thousand, eight hundred fifty-six".