981136433 has 8 divisors (see below), whose sum is σ = 995520960. Its totient is φ = 966767760.

The previous prime is 981136427. The next prime is 981136441. The reversal of 981136433 is 334631189.

It is a happy number.

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 981136433 - 2¹⁰ = 981135409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (981136483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186191 + ... + 191387.

It is an arithmetic number, because the mean of its divisors is an integer number (124440120).

Almost surely, 2^981136433 is an apocalyptic number.

It is an amenable number.

981136433 is a deficient number, since it is larger than the sum of its proper divisors (14384527).

981136433 is a wasteful number, since it uses less digits than its factorization.

981136433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927.

The product of its digits is 46656, while the sum is 38.

The square root of 981136433 is about 31323.0974362370. The cubic root of 981136433 is about 993.6721875811.

The spelling of 981136433 in words is "nine hundred eighty-one million, one hundred thirty-six thousand, four hundred thirty-three".