2164360442 has 8 divisors (see below), whose sum is σ = 3265307316. Its totient is φ = 1075924672.

The previous prime is 2164360427. The next prime is 2164360447. The reversal of 2164360442 is 2440634612.

It can be written as a sum of positive squares in 2 ways, for example, as 2155652041 + 8708401 = 46429^2 + 2951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2164360442² = 9368912245788870728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2164360399 and 2164360408.

It is not an unprimeable number, because it can be changed into a prime (2164360447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3127343 + ... + 3128034.

Almost surely, 2^2164360442 is an apocalyptic number.

2164360442 is a deficient number, since it is larger than the sum of its proper divisors (1100946874).

2164360442 is a wasteful number, since it uses less digits than its factorization.

2164360442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255552.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 2164360442 is about 46522.6873901326. The cubic root of 2164360442 is about 1293.5300707877.

The spelling of 2164360442 in words is "two billion, one hundred sixty-four million, three hundred sixty thousand, four hundred forty-two".