83148891 has 16 divisors (see below), whose sum is σ = 129095424. Its totient is φ = 46616544.

The previous prime is 83148847. The next prime is 83148893. The reversal of 83148891 is 19884138.

It is not a de Polignac number, because 83148891 - 2⁹ = 83148379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83148893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36241 + ... + 38466.

It is an arithmetic number, because the mean of its divisors is an integer number (8068464).

Almost surely, 2^83148891 is an apocalyptic number.

83148891 is a deficient number, since it is larger than the sum of its proper divisors (45946533).

83148891 is a wasteful number, since it uses less digits than its factorization.

83148891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74770.

The product of its digits is 55296, while the sum is 42.

The square root of 83148891 is about 9118.6013730177. The cubic root of 83148891 is about 436.4677438903.

It can be divided in two parts, 8314 and 8891, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 83148891 in words is "eighty-three million, one hundred forty-eight thousand, eight hundred ninety-one".