2166935442 has 16 divisors (see below), whose sum is σ = 4952995392. Its totient is φ = 619124400.

The previous prime is 2166935383. The next prime is 2166935461. The reversal of 2166935442 is 2445396612.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 51593701 = 2166935442 / (2 + 1 + 6 + 6 + 9 + 3 + 5 + 4 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2166935394 and 2166935403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25796809 + ... + 25796892.

It is an arithmetic number, because the mean of its divisors is an integer number (309562212).

Almost surely, 2^2166935442 is an apocalyptic number.

2166935442 is an abundant number, since it is smaller than the sum of its proper divisors (2786059950).

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

2166935442 is a wasteful number, since it uses less digits than its factorization.

2166935442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51593713.

The product of its digits is 311040, while the sum is 42.

The square root of 2166935442 is about 46550.3538332417. The cubic root of 2166935442 is about 1294.0428504229.

The spelling of 2166935442 in words is "two billion, one hundred sixty-six million, nine hundred thirty-five thousand, four hundred forty-two".