2140646165 has 16 divisors (see below), whose sum is σ = 3036977280. Its totient is φ = 1417254720.

The previous prime is 2140646129. The next prime is 2140646177. The reversal of 2140646165 is 5616460412.

It is not a de Polignac number, because 2140646165 - 2¹⁰ = 2140645141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053491 + ... + 1055520.

It is an arithmetic number, because the mean of its divisors is an integer number (189811080).

Almost surely, 2^2140646165 is an apocalyptic number.

It is an amenable number.

2140646165 is a deficient number, since it is larger than the sum of its proper divisors (896331115).

2140646165 is a wasteful number, since it uses less digits than its factorization.

2140646165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109052.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2140646165 is about 46267.1175350270. The cubic root of 2140646165 is about 1288.7884313866.

The spelling of 2140646165 in words is "two billion, one hundred forty million, six hundred forty-six thousand, one hundred sixty-five".