1640234222 has 32 divisors (see below), whose sum is σ = 2873892960. Its totient is φ = 693806080.

The previous prime is 1640234179. The next prime is 1640234227. The reversal of 1640234222 is 2224320461.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1640234191 and 1640234200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640234227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8648 + ... + 57924.

It is an arithmetic number, because the mean of its divisors is an integer number (89809155).

Almost surely, 2^1640234222 is an apocalyptic number.

1640234222 is a deficient number, since it is larger than the sum of its proper divisors (1233658738).

1640234222 is a wasteful number, since it uses less digits than its factorization.

1640234222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49396.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1640234222 is about 40499.8052094081. The cubic root of 1640234222 is about 1179.3298459408.

Adding to 1640234222 its reverse (2224320461), we get a palindrome (3864554683).

The spelling of 1640234222 in words is "one billion, six hundred forty million, two hundred thirty-four thousand, two hundred twenty-two".