1918218499765 has 32 divisors (see below), whose sum is σ = 2331984733056. Its totient is φ = 1514651685120.

The previous prime is 1918218499759. The next prime is 1918218499783. The reversal of 1918218499765 is 5679948128191.

It is not a de Polignac number, because 1918218499765 - 2¹¹ = 1918218497717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1918218499694 and 1918218499703.

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, 90381855 + ... + 90403075.

It is an arithmetic number, because the mean of its divisors is an integer number (72874522908).

Almost surely, 2^{1918218499765} is an apocalyptic number.

It is an amenable number.

1918218499765 is a deficient number, since it is larger than the sum of its proper divisors (413766233291).

1918218499765 is a wasteful number, since it uses less digits than its factorization.

1918218499765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22149.

The product of its digits is 78382080, while the sum is 70.

The spelling of 1918218499765 in words is "one trillion, nine hundred eighteen billion, two hundred eighteen million, four hundred ninety-nine thousand, seven hundred sixty-five".