1640224146 has 32 divisors (see below), whose sum is σ = 3581164800. Its totient is φ = 496691280.

The previous prime is 1640224129. The next prime is 1640224169. The reversal of 1640224146 is 6414220461.

It is a happy 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, 96345 + ... + 112083.

It is an arithmetic number, because the mean of its divisors is an integer number (111911400).

Almost surely, 2^1640224146 is an apocalyptic number.

1640224146 is an abundant number, since it is smaller than the sum of its proper divisors (1940940654).

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

1640224146 is a wasteful number, since it uses less digits than its factorization.

1640224146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17334.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1640224146 is about 40499.6808135570. The cubic root of 1640224146 is about 1179.3274310516.

The spelling of 1640224146 in words is "one billion, six hundred forty million, two hundred twenty-four thousand, one hundred forty-six".