1618492775965 has 32 divisors (see below), whose sum is σ = 2097960409440. Its totient is φ = 1191558905856.

The previous prime is 1618492775957. The next prime is 1618492776041. The reversal of 1618492775965 is 5695772948161.

It can be written as a sum of positive squares in 16 ways, for example, as 896191662276 + 722301113689 = 946674^2 + 849883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618492775965 - 2³ = 1618492775957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1618492775894 and 1618492775903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39635899 + ... + 39676711.

It is an arithmetic number, because the mean of its divisors is an integer number (65561262795).

Almost surely, 2^{1618492775965} is an apocalyptic number.

It is an amenable number.

1618492775965 is a deficient number, since it is larger than the sum of its proper divisors (479467633475).

1618492775965 is a wasteful number, since it uses less digits than its factorization.

1618492775965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42673.

The product of its digits is 228614400, while the sum is 70.

The spelling of 1618492775965 in words is "one trillion, six hundred eighteen billion, four hundred ninety-two million, seven hundred seventy-five thousand, nine hundred sixty-five".