1155340215 has 24 divisors (see below), whose sum is σ = 2003919840. Its totient is φ = 615772224.

The previous prime is 1155340171. The next prime is 1155340259. The reversal of 1155340215 is 5120435511.

1155340215 is a `hidden beast` number, since 115 + 534 + 0 + 2 + 15 = 666.

It is an interprime number because it is at equal distance from previous prime (1155340171) and next prime (1155340259).

It is not a de Polignac number, because 1155340215 - 2¹⁹ = 1154815927 is a prime.

It is a super-2 number, since 2×1155340215² = 2669622024792492450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67414 + ... + 82796.

It is an arithmetic number, because the mean of its divisors is an integer number (83496660).

Almost surely, 2^1155340215 is an apocalyptic number.

1155340215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155340215 is a deficient number, since it is larger than the sum of its proper divisors (848579625).

1155340215 is a wasteful number, since it uses less digits than its factorization.

1155340215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17063 (or 17060 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1155340215 is about 33990.2958945638. The cubic root of 1155340215 is about 1049.3087559191.

Adding to 1155340215 its reverse (5120435511), we get a palindrome (6275775726).

The spelling of 1155340215 in words is "one billion, one hundred fifty-five million, three hundred forty thousand, two hundred fifteen".