1145515111 has 8 divisors (see below), whose sum is σ = 1298559920. Its totient is φ = 1001745792.

The previous prime is 1145515099. The next prime is 1145515127. The reversal of 1145515111 is 1115155411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145515111 - 2¹⁹ = 1144990823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145515171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2318610 + ... + 2319103.

It is an arithmetic number, because the mean of its divisors is an integer number (162319990).

Almost surely, 2^1145515111 is an apocalyptic number.

1145515111 is a deficient number, since it is larger than the sum of its proper divisors (153044809).

1145515111 is a wasteful number, since it uses less digits than its factorization.

1145515111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637745.

The product of its digits is 500, while the sum is 25.

The square root of 1145515111 is about 33845.4592375403. The cubic root of 1145515111 is about 1046.3258161071.

The spelling of 1145515111 in words is "one billion, one hundred forty-five million, five hundred fifteen thousand, one hundred eleven".