20182164645 has 16 divisors (see below), whose sum is σ = 32294465280. Its totient is φ = 10762820544.

The previous prime is 20182164589. The next prime is 20182164647. The reversal of 20182164645 is 54646128102.

It is a happy number.

It is not a de Polignac number, because 20182164645 - 2⁸ = 20182164389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20182164647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121711 + ... + 234899.

It is an arithmetic number, because the mean of its divisors is an integer number (2018404080).

Almost surely, 2^20182164645 is an apocalyptic number.

It is an amenable number.

20182164645 is a deficient number, since it is larger than the sum of its proper divisors (12112300635).

20182164645 is a wasteful number, since it uses less digits than its factorization.

20182164645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125084.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 20182164645 in words is "twenty billion, one hundred eighty-two million, one hundred sixty-four thousand, six hundred forty-five".