19822658645 has 8 divisors (see below), whose sum is σ = 23958322080. Its totient is φ = 15744039120.

The previous prime is 19822658633. The next prime is 19822658671. The reversal of 19822658645 is 54685622891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19822658645 - 2⁸ = 19822658389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14260211 + ... + 14261600.

It is an arithmetic number, because the mean of its divisors is an integer number (2994790260).

Almost surely, 2^19822658645 is an apocalyptic number.

It is an amenable number.

19822658645 is a deficient number, since it is larger than the sum of its proper divisors (4135663435).

19822658645 is a wasteful number, since it uses less digits than its factorization.

19822658645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28521955.

The product of its digits is 8294400, while the sum is 56.

The spelling of 19822658645 in words is "nineteen billion, eight hundred twenty-two million, six hundred fifty-eight thousand, six hundred forty-five".