1155745615 has 16 divisors (see below), whose sum is σ = 1422102528. Its totient is φ = 901214496.

The previous prime is 1155745543. The next prime is 1155745621. The reversal of 1155745615 is 5165475511.

It is a cyclic number.

It is not a de Polignac number, because 1155745615 - 2¹⁵ = 1155712847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102802 + ... + 113488.

It is an arithmetic number, because the mean of its divisors is an integer number (88881408).

Almost surely, 2^1155745615 is an apocalyptic number.

1155745615 is a deficient number, since it is larger than the sum of its proper divisors (266356913).

1155745615 is a wasteful number, since it uses less digits than its factorization.

1155745615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11238.

The product of its digits is 105000, while the sum is 40.

The square root of 1155745615 is about 33996.2588382898. The cubic root of 1155745615 is about 1049.4314730254.

The spelling of 1155745615 in words is "one billion, one hundred fifty-five million, seven hundred forty-five thousand, six hundred fifteen".