1164309981 has 8 divisors (see below), whose sum is σ = 1563745344. Its totient is φ = 770540640.

The previous prime is 1164309943. The next prime is 1164310001. The reversal of 1164309981 is 1899034611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1164309981 - 2⁶ = 1164309917 is a prime.

It is a super-2 number, since 2×1164309981² = 2711235463712440722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164309281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416025 + ... + 1416846.

It is an arithmetic number, because the mean of its divisors is an integer number (195468168).

Almost surely, 2^1164309981 is an apocalyptic number.

It is an amenable number.

1164309981 is a deficient number, since it is larger than the sum of its proper divisors (399435363).

1164309981 is a wasteful number, since it uses less digits than its factorization.

1164309981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833011.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1164309981 is about 34121.9867680650. The cubic root of 1164309981 is about 1052.0172801573.

The spelling of 1164309981 in words is "one billion, one hundred sixty-four million, three hundred nine thousand, nine hundred eighty-one".