1166915941 has 4 divisors (see below), whose sum is σ = 1167056800. Its totient is φ = 1166775084.

The previous prime is 1166915927. The next prime is 1166915947. The reversal of 1166915941 is 1495196611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1495196611 = 83 ⋅18014417.

It is a cyclic number.

It is not a de Polignac number, because 1166915941 - 2⁹ = 1166915429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166915947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57171 + ... + 74848.

It is an arithmetic number, because the mean of its divisors is an integer number (291764200).

Almost surely, 2^1166915941 is an apocalyptic number.

It is an amenable number.

1166915941 is a deficient number, since it is larger than the sum of its proper divisors (140859).

1166915941 is an equidigital number, since it uses as much as digits as its factorization.

1166915941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140858.

The product of its digits is 58320, while the sum is 43.

The square root of 1166915941 is about 34160.1513609059. The cubic root of 1166915941 is about 1052.8015707619.

The spelling of 1166915941 in words is "one billion, one hundred sixty-six million, nine hundred fifteen thousand, nine hundred forty-one".