1155493165 has 8 divisors (see below), whose sum is σ = 1424067480. Its totient is φ = 899410752.

The previous prime is 1155493147. The next prime is 1155493187. The reversal of 1155493165 is 5613945511.

It can be written as a sum of positive squares in 4 ways, for example, as 396049801 + 759443364 = 19901^2 + 27558^2 .

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 1155493165 - 2¹³ = 1155484973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3122770 + ... + 3123139.

It is an arithmetic number, because the mean of its divisors is an integer number (178008435).

Almost surely, 2^1155493165 is an apocalyptic number.

It is an amenable number.

1155493165 is a deficient number, since it is larger than the sum of its proper divisors (268574315).

1155493165 is an equidigital number, since it uses as much as digits as its factorization.

1155493165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6245951.

The product of its digits is 81000, while the sum is 40.

The square root of 1155493165 is about 33992.5457269678. The cubic root of 1155493165 is about 1049.3550582089.

The spelling of 1155493165 in words is "one billion, one hundred fifty-five million, four hundred ninety-three thousand, one hundred sixty-five".