83148749 has 6 divisors (see below), whose sum is σ = 86921646. Its totient is φ = 79533080.

The previous prime is 83148733. The next prime is 83148757. The reversal of 83148749 is 94784138.

It can be written as a sum of positive squares in only one way, i.e., 82537225 + 611524 = 9085^2 + 782^2 .

It is not a de Polignac number, because 83148749 - 2⁴ = 83148733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83148719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78062 + ... + 79119.

It is an arithmetic number, because the mean of its divisors is an integer number (14486941).

Almost surely, 2^83148749 is an apocalyptic number.

It is an amenable number.

83148749 is a deficient number, since it is larger than the sum of its proper divisors (3772897).

83148749 is a wasteful number, since it uses less digits than its factorization.

83148749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157227 (or 157204 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 83148749 is about 9118.5935867326. The cubic root of 83148749 is about 436.4674954266.

The spelling of 83148749 in words is "eighty-three million, one hundred forty-eight thousand, seven hundred forty-nine".