1164981 has 8 divisors (see below), whose sum is σ = 1560384. Its totient is φ = 773120.

The previous prime is 1164979. The next prime is 1164991. The reversal of 1164981 is 1894611.

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

It is a cyclic number.

It is not a de Polignac number, because 1164981 - 2¹ = 1164979 is a prime.

It is a super-2 number, since 2×1164981² = 2714361460722, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16 + ... + 1526.

It is an arithmetic number, because the mean of its divisors is an integer number (195048).

2^1164981 is an apocalyptic number.

It is an amenable number.

1164981 is a deficient number, since it is larger than the sum of its proper divisors (395403).

1164981 is a wasteful number, since it uses less digits than its factorization.

1164981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its digits is 1728, while the sum is 30.

The square root of 1164981 is about 1079.3428556302. The cubic root of 1164981 is about 105.2219342044.

It can be divided in two parts, 1164 and 981, that added together give a triangular number (2145 = T₆₅).

The spelling of 1164981 in words is "one million, one hundred sixty-four thousand, nine hundred eighty-one".