82149437 has 4 divisors (see below), whose sum is σ = 83375616. Its totient is φ = 80923260.

The previous prime is 82149433. The next prime is 82149451. The reversal of 82149437 is 73494128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82149437 - 2² = 82149433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82149437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82149433) 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, 612989 + ... + 613122.

It is an arithmetic number, because the mean of its divisors is an integer number (20843904).

Almost surely, 2^82149437 is an apocalyptic number.

It is an amenable number.

82149437 is a deficient number, since it is larger than the sum of its proper divisors (1226179).

82149437 is a wasteful number, since it uses less digits than its factorization.

82149437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226178.

The product of its digits is 48384, while the sum is 38.

The square root of 82149437 is about 9063.6326602527. The cubic root of 82149437 is about 434.7119015422.

The spelling of 82149437 in words is "eighty-two million, one hundred forty-nine thousand, four hundred thirty-seven".