83146891 has 2 divisors, whose sum is σ = 83146892. Its totient is φ = 83146890.

The previous prime is 83146883. The next prime is 83146897. The reversal of 83146891 is 19864138.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83146891 - 2³ = 83146883 is a prime.

It is not a weakly prime, because it can be changed into another prime (83146897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41573445 + 41573446.

It is an arithmetic number, because the mean of its divisors is an integer number (41573446).

Almost surely, 2^83146891 is an apocalyptic number.

83146891 is a deficient number, since it is larger than the sum of its proper divisors (1).

83146891 is an equidigital number, since it uses as much as digits as its factorization.

83146891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 83146891 is about 9118.4917064172. The cubic root of 83146891 is about 436.4642443749.

The spelling of 83146891 in words is "eighty-three million, one hundred forty-six thousand, eight hundred ninety-one".