1145015111 has 4 divisors (see below), whose sum is σ = 1146180912. Its totient is φ = 1143849312.

The previous prime is 1145015099. The next prime is 1145015117. The reversal of 1145015111 is 1115105411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1115105411 = 7 ⋅159300773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145015111 is a prime.

It is a super-2 number, since 2×1145015111² = 2622119208836684642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145015117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581426 + ... + 583391.

It is an arithmetic number, because the mean of its divisors is an integer number (286545228).

Almost surely, 2^1145015111 is an apocalyptic number.

1145015111 is a deficient number, since it is larger than the sum of its proper divisors (1165801).

1145015111 is an equidigital number, since it uses as much as digits as its factorization.

1145015111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165800.

The product of its (nonzero) digits is 100, while the sum is 20.

The square root of 1145015111 is about 33838.0719161125. The cubic root of 1145015111 is about 1046.1735588274.

The spelling of 1145015111 in words is "one billion, one hundred forty-five million, fifteen thousand, one hundred eleven".