1618107440473 has 4 divisors (see below), whose sum is σ = 1618110426240. Its totient is φ = 1618104454708.

The previous prime is 1618107440431. The next prime is 1618107440513. The reversal of 1618107440473 is 3740447018161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1618107440473 - 2³³ = 1609517505881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1618107441473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425665 + ... + 1848622.

It is an arithmetic number, because the mean of its divisors is an integer number (404527606560).

Almost surely, 2^{1618107440473} is an apocalyptic number.

It is an amenable number.

1618107440473 is a deficient number, since it is larger than the sum of its proper divisors (2985767).

1618107440473 is an equidigital number, since it uses as much as digits as its factorization.

1618107440473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985766.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 1618107440473 in words is "one trillion, six hundred eighteen billion, one hundred seven million, four hundred forty thousand, four hundred seventy-three".