1820180022568 has 16 divisors (see below), whose sum is σ = 3505076395380. Its totient is φ = 885492983808.

The previous prime is 1820180022539. The next prime is 1820180022571. The reversal of 1820180022568 is 8652200810281.

It can be written as a sum of positive squares in 2 ways, for example, as 1581311280004 + 238868742564 = 1257502^2 + 488742^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3074628121 + ... + 3074628712.

Almost surely, 2^{1820180022568} is an apocalyptic number.

It is an amenable number.

1820180022568 is a deficient number, since it is larger than the sum of its proper divisors (1684896372812).

1820180022568 is a wasteful number, since it uses less digits than its factorization.

1820180022568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6149256876 (or 6149256872 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The spelling of 1820180022568 in words is "one trillion, eight hundred twenty billion, one hundred eighty million, twenty-two thousand, five hundred sixty-eight".