2165387466 has 32 divisors (see below), whose sum is σ = 4789211328. Its totient is φ = 647187840.

The previous prime is 2165387443. The next prime is 2165387491. The reversal of 2165387466 is 6647835612.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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, 219901 + ... + 229536.

It is an arithmetic number, because the mean of its divisors is an integer number (149662854).

Almost surely, 2^2165387466 is an apocalyptic number.

2165387466 is an abundant number, since it is smaller than the sum of its proper divisors (2623823862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165387466 is a wasteful number, since it uses less digits than its factorization.

2165387466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449526.

The product of its digits is 1451520, while the sum is 48.

The square root of 2165387466 is about 46533.7239644540. The cubic root of 2165387466 is about 1293.7346387403.

The spelling of 2165387466 in words is "two billion, one hundred sixty-five million, three hundred eighty-seven thousand, four hundred sixty-six".