1155344100 has 36 divisors (see below), whose sum is σ = 3342796464. Its totient is φ = 308091680.

The previous prime is 1155343951. The next prime is 1155344107. The reversal of 1155344100 is 14435511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1155344107) 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, 1925274 + ... + 1925873.

Almost surely, 2^1155344100 is an apocalyptic number.

1155344100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155344100 is an abundant number, since it is smaller than the sum of its proper divisors (2187452364).

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

1155344100 is a wasteful number, since it uses less digits than its factorization.

1155344100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851164 (or 3851157 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1155344100 is about 33990.3530431798. The cubic root of 1155344100 is about 1049.3099320690.

Adding to 1155344100 its reverse (14435511), we get a palindrome (1169779611).

The spelling of 1155344100 in words is "one billion, one hundred fifty-five million, three hundred forty-four thousand, one hundred".