1166426739 has 72 divisors (see below), whose sum is σ = 1891174272. Its totient is φ = 691441920.

The previous prime is 1166426707. The next prime is 1166426747. The reversal of 1166426739 is 9376246611.

It is not a de Polignac number, because 1166426739 - 2⁵ = 1166426707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166426694 and 1166426703.

It is not an unprimeable number, because it can be changed into a prime (1166426749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3726447 + ... + 3726759.

Almost surely, 2^1166426739 is an apocalyptic number.

1166426739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1166426739 is a deficient number, since it is larger than the sum of its proper divisors (724747533).

1166426739 is a wasteful number, since it uses less digits than its factorization.

1166426739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 403 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 1166426739 is about 34152.9901911970. The cubic root of 1166426739 is about 1052.6544294514.

The spelling of 1166426739 in words is "one billion, one hundred sixty-six million, four hundred twenty-six thousand, seven hundred thirty-nine".