1155658368 has 256 divisors, whose sum is σ = 3489868800. Its totient is φ = 336838656.

The previous prime is 1155658367. The next prime is 1155658369. The reversal of 1155658368 is 8638565511.

It is an interprime number because it is at equal distance from previous prime (1155658367) and next prime (1155658369).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1155658367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6456103 + ... + 6456281.

It is an arithmetic number, because the mean of its divisors is an integer number (13632300).

Almost surely, 2^1155658368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155658368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744934400).

1155658368 is an abundant number, since it is smaller than the sum of its proper divisors (2334210432).

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

1155658368 is a wasteful number, since it uses less digits than its factorization.

1155658368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 267 counting only the distinct ones).

The product of its digits is 864000, while the sum is 48.

The square root of 1155658368 is about 33994.9756287602. The cubic root of 1155658368 is about 1049.4050652385.

The spelling of 1155658368 in words is "one billion, one hundred fifty-five million, six hundred fifty-eight thousand, three hundred sixty-eight".