1153823944 has 64 divisors (see below), whose sum is σ = 2802844800. Its totient is φ = 432428544.

The previous prime is 1153823941. The next prime is 1153823959. The reversal of 1153823944 is 4493283511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1153823897 and 1153823906.

It is not an unprimeable number, because it can be changed into a prime (1153823941) 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, 27877 + ... + 55540.

It is an arithmetic number, because the mean of its divisors is an integer number (43794450).

Almost surely, 2^1153823944 is an apocalyptic number.

1153823944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1153823944 is an abundant number, since it is smaller than the sum of its proper divisors (1649020856).

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

1153823944 is a wasteful number, since it uses less digits than its factorization.

1153823944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83462 (or 83458 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 1153823944 is about 33967.9841026812. The cubic root of 1153823944 is about 1048.8495165971.

The spelling of 1153823944 in words is "one billion, one hundred fifty-three million, eight hundred twenty-three thousand, nine hundred forty-four".