1101509955 has 96 divisors (see below), whose sum is σ = 2453371200. Its totient is φ = 464776704.

The previous prime is 1101509911. The next prime is 1101509957. The reversal of 1101509955 is 5599051011.

It is not a de Polignac number, because 1101509955 - 2⁹ = 1101509443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101509957) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79591 + ... + 92399.

It is an arithmetic number, because the mean of its divisors is an integer number (25555950).

Almost surely, 2^1101509955 is an apocalyptic number.

1101509955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1101509955 is an abundant number, since it is smaller than the sum of its proper divisors (1351861245).

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

1101509955 is a wasteful number, since it uses less digits than its factorization.

1101509955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12850 (or 12837 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 36.

The square root of 1101509955 is about 33189.0035252642. The cubic root of 1101509955 is about 1032.7522317790.

The spelling of 1101509955 in words is "one billion, one hundred one million, five hundred nine thousand, nine hundred fifty-five".