981366933 has 8 divisors (see below), whose sum is σ = 1310605600. Its totient is φ = 653186448.

The previous prime is 981366923. The next prime is 981366961. The reversal of 981366933 is 339663189.

It is a happy number.

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

It is not a de Polignac number, because 981366933 - 2⁴ = 981366917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981366913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262378 + ... + 266091.

It is an arithmetic number, because the mean of its divisors is an integer number (163825700).

Almost surely, 2^981366933 is an apocalyptic number.

It is an amenable number.

981366933 is a deficient number, since it is larger than the sum of its proper divisors (329238667).

981366933 is a wasteful number, since it uses less digits than its factorization.

981366933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529091.

The product of its digits is 629856, while the sum is 48.

The square root of 981366933 is about 31326.7766136256. The cubic root of 981366933 is about 993.7499965033.

It can be divided in two parts, 98 and 1366933, that added together give a triangular number (1367031 = T₁₆₅₃).

The spelling of 981366933 in words is "nine hundred eighty-one million, three hundred sixty-six thousand, nine hundred thirty-three".