83145413 has 4 divisors (see below), whose sum is σ = 89541228. Its totient is φ = 76749600.

The previous prime is 83145383. The next prime is 83145421. The reversal of 83145413 is 31454138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31454138 = 2 ⋅15727069.

It can be written as a sum of positive squares in 2 ways, for example, as 40934404 + 42211009 = 6398^2 + 6497^2 .

It is a cyclic number.

It is not a de Polignac number, because 83145413 - 2⁸ = 83145157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83145493) 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, 3197888 + ... + 3197913.

It is an arithmetic number, because the mean of its divisors is an integer number (22385307).

Almost surely, 2^83145413 is an apocalyptic number.

It is an amenable number.

83145413 is a deficient number, since it is larger than the sum of its proper divisors (6395815).

83145413 is a wasteful number, since it uses less digits than its factorization.

83145413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395814.

The product of its digits is 5760, while the sum is 29.

The square root of 83145413 is about 9118.4106619520. The cubic root of 83145413 is about 436.4616581969.

The spelling of 83145413 in words is "eighty-three million, one hundred forty-five thousand, four hundred thirteen".