82150789 has 4 divisors (see below), whose sum is σ = 93886624. Its totient is φ = 70414956.

The previous prime is 82150787. The next prime is 82150801. The reversal of 82150789 is 98705128.

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 82150789 - 2¹ = 82150787 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 (82150781) 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, 5867907 + ... + 5867920.

It is an arithmetic number, because the mean of its divisors is an integer number (23471656).

Almost surely, 2^82150789 is an apocalyptic number.

It is an amenable number.

82150789 is a deficient number, since it is larger than the sum of its proper divisors (11735835).

82150789 is a wasteful number, since it uses less digits than its factorization.

82150789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11735834.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 82150789 is about 9063.7072437276. The cubic root of 82150789 is about 434.7142863314.

The spelling of 82150789 in words is "eighty-two million, one hundred fifty thousand, seven hundred eighty-nine".