1640219162 has 4 divisors (see below), whose sum is σ = 2460328746. Its totient is φ = 820109580.

The previous prime is 1640219159. The next prime is 1640219183. The reversal of 1640219162 is 2619120461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1415189161 + 225030001 = 37619^2 + 15001^2 .

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 as a sum of consecutive naturals, namely, 410054789 + ... + 410054792.

Almost surely, 2^1640219162 is an apocalyptic number.

1640219162 is a deficient number, since it is larger than the sum of its proper divisors (820109584).

1640219162 is an equidigital number, since it uses as much as digits as its factorization.

1640219162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820109583.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1640219162 is about 40499.6192821612. The cubic root of 1640219162 is about 1179.3262365454.

The spelling of 1640219162 in words is "one billion, six hundred forty million, two hundred nineteen thousand, one hundred sixty-two".