1155649600 has 84 divisors (see below), whose sum is σ = 3249883264. Its totient is φ = 396218880.

The previous prime is 1155649571. The next prime is 1155649609. The reversal of 1155649600 is 69465511.

It is a self number, because there is not a number n which added to its sum of digits gives 1155649600.

It is not an unprimeable number, because it can be changed into a prime (1155649609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40392 + ... + 62791.

Almost surely, 2^1155649600 is an apocalyptic number.

1155649600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155649600 is an abundant number, since it is smaller than the sum of its proper divisors (2094233664).

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

1155649600 is a wasteful number, since it uses less digits than its factorization.

1155649600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103212 (or 103197 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1155649600 is about 33994.8466682819. The cubic root of 1155649600 is about 1049.4024112803.

The spelling of 1155649600 in words is "one billion, one hundred fifty-five million, six hundred forty-nine thousand, six hundred".