1155660516 has 108 divisors (see below), whose sum is σ = 3042159120. Its totient is φ = 369869760.

The previous prime is 1155660511. The next prime is 1155660521. The reversal of 1155660516 is 6150665511.

1155660516 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1155660511) and next prime (1155660521).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1155660511) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6456115 + ... + 6456293.

It is an arithmetic number, because the mean of its divisors is an integer number (28168140).

Almost surely, 2^1155660516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155660516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521079560).

1155660516 is an abundant number, since it is smaller than the sum of its proper divisors (1886498604).

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

1155660516 is a wasteful number, since it uses less digits than its factorization.

1155660516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1155660516 is about 33995.0072216495. The cubic root of 1155660516 is about 1049.4057154078.

The spelling of 1155660516 in words is "one billion, one hundred fifty-five million, six hundred sixty thousand, five hundred sixteen".