2165350642 has 16 divisors (see below), whose sum is σ = 3997570752. Its totient is φ = 856622160.

The previous prime is 2165350619. The next prime is 2165350661. The reversal of 2165350642 is 2460535612.

It is a junction number, because it is equal to n+sod(n) for n = 2165350598 and 2165350607.

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, 5948584 + ... + 5948947.

It is an arithmetic number, because the mean of its divisors is an integer number (249848172).

Almost surely, 2^2165350642 is an apocalyptic number.

2165350642 is a deficient number, since it is larger than the sum of its proper divisors (1832220110).

2165350642 is a wasteful number, since it uses less digits than its factorization.

2165350642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897553.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 2165350642 is about 46533.3282927409. The cubic root of 2165350642 is about 1293.7273050637.

The spelling of 2165350642 in words is "two billion, one hundred sixty-five million, three hundred fifty thousand, six hundred forty-two".