1166110155 has 128 divisors (see below), whose sum is σ = 2596147200. Its totient is φ = 484227072.

The previous prime is 1166110139. The next prime is 1166110171. The reversal of 1166110155 is 5510116611.

It is an interprime number because it is at equal distance from previous prime (1166110139) and next prime (1166110171).

It is not a de Polignac number, because 1166110155 - 2⁴ = 1166110139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 464634 + ... + 467136.

It is an arithmetic number, because the mean of its divisors is an integer number (20282400).

Almost surely, 2^1166110155 is an apocalyptic number.

1166110155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166110155 is an abundant number, since it is smaller than the sum of its proper divisors (1430037045).

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

1166110155 is a wasteful number, since it uses less digits than its factorization.

1166110155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 2564 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 1166110155 is about 34148.3550848353. The cubic root of 1166110155 is about 1052.5591859488.

Adding to 1166110155 its reverse (5510116611), we get a palindrome (6676226766).

The spelling of 1166110155 in words is "one billion, one hundred sixty-six million, one hundred ten thousand, one hundred fifty-five".