1155370944 has 224 divisors, whose sum is σ = 3809756160. Its totient is φ = 300883968.

The previous prime is 1155370921. The next prime is 1155371003. The reversal of 1155370944 is 4490735511.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×1155370944² = 2669764036478902272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1554637 + ... + 1555379.

It is an arithmetic number, because the mean of its divisors is an integer number (17007840).

Almost surely, 2^1155370944 is an apocalyptic number.

1155370944 is a gapful number since it is divisible by the number (14) 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 1155370944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1904878080).

1155370944 is an abundant number, since it is smaller than the sum of its proper divisors (2654385216).

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

1155370944 is a wasteful number, since it uses less digits than its factorization.

1155370944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 1155370944 is about 33990.7479176319. The cubic root of 1155370944 is about 1049.3180587843.

The spelling of 1155370944 in words is "one billion, one hundred fifty-five million, three hundred seventy thousand, nine hundred forty-four".