18577222859 has 4 divisors (see below), whose sum is σ = 20006240016. Its totient is φ = 17148205704.

The previous prime is 18577222837. The next prime is 18577222931. The reversal of 18577222859 is 95822277581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95822277581 = 8543 ⋅11216467.

It is a cyclic number.

It is not a de Polignac number, because 18577222859 - 2¹² = 18577218763 is a prime.

It is a super-2 number, since 2×18577222859² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18577222819) 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, 714508559 + ... + 714508584.

It is an arithmetic number, because the mean of its divisors is an integer number (5001560004).

Almost surely, 2^18577222859 is an apocalyptic number.

18577222859 is a deficient number, since it is larger than the sum of its proper divisors (1429017157).

18577222859 is a wasteful number, since it uses less digits than its factorization.

18577222859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429017156.

The product of its digits is 5644800, while the sum is 56.

The spelling of 18577222859 in words is "eighteen billion, five hundred seventy-seven million, two hundred twenty-two thousand, eight hundred fifty-nine".