83538919 has 4 divisors (see below), whose sum is σ = 84545496. Its totient is φ = 82532344.

The previous prime is 83538913. The next prime is 83538929. The reversal of 83538919 is 91983538.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91983538 = 2 ⋅45991769.

It is a cyclic number.

It is not a de Polignac number, because 83538919 - 2⁵ = 83538887 is a prime.

It is a super-2 number, since 2×83538919² = 13957501975377122, 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 (83538913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503164 + ... + 503329.

It is an arithmetic number, because the mean of its divisors is an integer number (21136374).

Almost surely, 2^83538919 is an apocalyptic number.

83538919 is a deficient number, since it is larger than the sum of its proper divisors (1006577).

83538919 is a wasteful number, since it uses less digits than its factorization.

83538919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006576.

The product of its digits is 233280, while the sum is 46.

The square root of 83538919 is about 9139.9627460948. The cubic root of 83538919 is about 437.1491286385.

The spelling of 83538919 in words is "eighty-three million, five hundred thirty-eight thousand, nine hundred nineteen".