83681934 has 32 divisors (see below), whose sum is σ = 193176576. Its totient is φ = 23671200.

The previous prime is 83681933. The next prime is 83681957. The reversal of 83681934 is 43918638.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83681933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5622 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (6036768).

Almost surely, 2^83681934 is an apocalyptic number.

83681934 is an abundant number, since it is smaller than the sum of its proper divisors (109494642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83681934 is a wasteful number, since it uses less digits than its factorization.

83681934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19840.

The product of its digits is 124416, while the sum is 42.

The square root of 83681934 is about 9147.7830101069. The cubic root of 83681934 is about 437.3984465242.

The spelling of 83681934 in words is "eighty-three million, six hundred eighty-one thousand, nine hundred thirty-four".