1618472220745 has 8 divisors (see below), whose sum is σ = 1975084744320. Its totient is φ = 1272832390320.

The previous prime is 1618472220727. The next prime is 1618472220751. The reversal of 1618472220745 is 5470222748161.

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

It is not a de Polignac number, because 1618472220745 - 2²¹ = 1618470123593 is a prime.

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, 2743172961 + ... + 2743173550.

It is an arithmetic number, because the mean of its divisors is an integer number (246885593040).

Almost surely, 2^{1618472220745} is an apocalyptic number.

It is an amenable number.

1618472220745 is a deficient number, since it is larger than the sum of its proper divisors (356612523575).

1618472220745 is an equidigital number, since it uses as much as digits as its factorization.

1618472220745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5486346575.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 1618472220745 in words is "one trillion, six hundred eighteen billion, four hundred seventy-two million, two hundred twenty thousand, seven hundred forty-five".