1166238407 has 4 divisors (see below), whose sum is σ = 1166318760. Its totient is φ = 1166158056.

The previous prime is 1166238397. The next prime is 1166238413. The reversal of 1166238407 is 7048326611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1166238407 - 2⁶ = 1166238343 is a prime.

It is a super-2 number, since 2×1166238407² = 2720224043923795298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166238457) 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, 11657 + ... + 49682.

It is an arithmetic number, because the mean of its divisors is an integer number (291579690).

Almost surely, 2^1166238407 is an apocalyptic number.

1166238407 is a deficient number, since it is larger than the sum of its proper divisors (80353).

1166238407 is an equidigital number, since it uses as much as digits as its factorization.

1166238407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80352.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1166238407 is about 34150.2328981809. The cubic root of 1166238407 is about 1052.5977723183.

The spelling of 1166238407 in words is "one billion, one hundred sixty-six million, two hundred thirty-eight thousand, four hundred seven".