18160573477 has 2 divisors, whose sum is σ = 18160573478. Its totient is φ = 18160573476.

The previous prime is 18160573471. The next prime is 18160573489. The reversal of 18160573477 is 77437506181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14473533636 + 3687039841 = 120306^2 + 60721^2 .

It is a cyclic number.

It is not a de Polignac number, because 18160573477 - 2³ = 18160573469 is a prime.

It is a super-4 number, since 4×18160573477⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18160573477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18160573471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9080286738 + 9080286739.

It is an arithmetic number, because the mean of its divisors is an integer number (9080286739).

Almost surely, 2^18160573477 is an apocalyptic number.

It is an amenable number.

18160573477 is a deficient number, since it is larger than the sum of its proper divisors (1).

18160573477 is an equidigital number, since it uses as much as digits as its factorization.

18160573477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 18160573477 in words is "eighteen billion, one hundred sixty million, five hundred seventy-three thousand, four hundred seventy-seven".