2119894065 has 32 divisors (see below), whose sum is σ = 3771225600. Its totient is φ = 1129852800.

The previous prime is 2119894057. The next prime is 2119894093. The reversal of 2119894065 is 5604989112.

It is not a de Polignac number, because 2119894065 - 2³ = 2119894057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2119894065.

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, 238776 + ... + 247494.

It is an arithmetic number, because the mean of its divisors is an integer number (117850800).

Almost surely, 2^2119894065 is an apocalyptic number.

It is an amenable number.

2119894065 is a deficient number, since it is larger than the sum of its proper divisors (1651331535).

2119894065 is a wasteful number, since it uses less digits than its factorization.

2119894065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534 (or 10528 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 2119894065 is about 46042.3073379256. The cubic root of 2119894065 is about 1284.6102599575.

The spelling of 2119894065 in words is "two billion, one hundred nineteen million, eight hundred ninety-four thousand, sixty-five".