83181404 has 12 divisors (see below), whose sum is σ = 145954200. Its totient is φ = 41480208.

The previous prime is 83181379. The next prime is 83181407. The reversal of 83181404 is 40418138.

It is a super-2 number, since 2×83181404² = 13838291942822432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83181407) 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 3 ways as a sum of consecutive naturals, for example, 25919 + ... + 28950.

It is an arithmetic number, because the mean of its divisors is an integer number (12162850).

Almost surely, 2^83181404 is an apocalyptic number.

It is an amenable number.

83181404 is a deficient number, since it is larger than the sum of its proper divisors (62772796).

83181404 is a wasteful number, since it uses less digits than its factorization.

83181404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55252 (or 55250 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 83181404 is about 9120.3839831446. The cubic root of 83181404 is about 436.5246258938.

The spelling of 83181404 in words is "eighty-three million, one hundred eighty-one thousand, four hundred four".