1113545161 has 16 divisors (see below), whose sum is σ = 1205568000. Its totient is φ = 1025373888.

The previous prime is 1113545149. The next prime is 1113545177. The reversal of 1113545161 is 1615453111.

It is a cyclic number.

It is not a de Polignac number, because 1113545161 - 2⁵ = 1113545129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1113545861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242515 + ... + 247063.

It is an arithmetic number, because the mean of its divisors is an integer number (75348000).

Almost surely, 2^1113545161 is an apocalyptic number.

It is an amenable number.

1113545161 is a deficient number, since it is larger than the sum of its proper divisors (92022839).

1113545161 is a wasteful number, since it uses less digits than its factorization.

1113545161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968.

The product of its digits is 1800, while the sum is 28.

The square root of 1113545161 is about 33369.8241080171. The cubic root of 1113545161 is about 1036.4999329428.

Adding to 1113545161 its reverse (1615453111), we get a palindrome (2728998272).

The spelling of 1113545161 in words is "one billion, one hundred thirteen million, five hundred forty-five thousand, one hundred sixty-one".