33984181 has 12 divisors (see below), whose sum is σ = 42691936. Its totient is φ = 26480520.

The previous prime is 33984169. The next prime is 33984193. The reversal of 33984181 is 18148933.

It is an interprime number because it is at equal distance from previous prime (33984169) and next prime (33984193).

It is not a de Polignac number, because 33984181 - 2²¹ = 31887029 is a prime.

It is a super-2 number, since 2×33984181² = 2309849116481522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33984181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33984161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19215 + ... + 20908.

Almost surely, 2^33984181 is an apocalyptic number.

It is an amenable number.

33984181 is a deficient number, since it is larger than the sum of its proper divisors (8707755).

33984181 is a wasteful number, since it uses less digits than its factorization.

33984181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40152 (or 40141 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 33984181 is about 5829.5952689702. The cubic root of 33984181 is about 323.9109297660.

The spelling of 33984181 in words is "thirty-three million, nine hundred eighty-four thousand, one hundred eighty-one".