83137381 has 16 divisors (see below), whose sum is σ = 88704000. Its totient is φ = 77788800.

The previous prime is 83137363. The next prime is 83137391. The reversal of 83137381 is 18373138.

It is a cyclic number.

It is not a de Polignac number, because 83137381 - 2¹⁷ = 83006309 is a prime.

It is a super-2 number, since 2×83137381² = 13823648239078322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83137391) 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, 189160 + ... + 189598.

It is an arithmetic number, because the mean of its divisors is an integer number (5544000).

Almost surely, 2^83137381 is an apocalyptic number.

It is an amenable number.

83137381 is a deficient number, since it is larger than the sum of its proper divisors (5566619).

83137381 is a wasteful number, since it uses less digits than its factorization.

83137381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its digits is 12096, while the sum is 34.

The square root of 83137381 is about 9117.9702236847. The cubic root of 83137381 is about 436.4476034110.

The spelling of 83137381 in words is "eighty-three million, one hundred thirty-seven thousand, three hundred eighty-one".