1166390151 has 4 divisors (see below), whose sum is σ = 1555186872. Its totient is φ = 777593432.

The previous prime is 1166390129. The next prime is 1166390167. The reversal of 1166390151 is 1510936611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1510936611 = 3 ⋅503645537.

It is a cyclic number.

It is not a de Polignac number, because 1166390151 - 2⁶ = 1166390087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166390051) 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, 194398356 + ... + 194398361.

It is an arithmetic number, because the mean of its divisors is an integer number (388796718).

Almost surely, 2^1166390151 is an apocalyptic number.

1166390151 is a deficient number, since it is larger than the sum of its proper divisors (388796721).

1166390151 is an equidigital number, since it uses as much as digits as its factorization.

1166390151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388796720.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 1166390151 is about 34152.4545384369. The cubic root of 1166390151 is about 1052.6434229241.

The spelling of 1166390151 in words is "one billion, one hundred sixty-six million, three hundred ninety thousand, one hundred fifty-one".