1640143132 has 6 divisors (see below), whose sum is σ = 2870250488. Its totient is φ = 820071564.

The previous prime is 1640143123. The next prime is 1640143147. The reversal of 1640143132 is 2313410461.

It is a junction number, because it is equal to n+sod(n) for n = 1640143097 and 1640143106.

It is a congruent number.

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, 205017888 + ... + 205017895.

Almost surely, 2^1640143132 is an apocalyptic number.

It is an amenable number.

1640143132 is a deficient number, since it is larger than the sum of its proper divisors (1230107356).

1640143132 is a wasteful number, since it uses less digits than its factorization.

1640143132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410035787 (or 410035785 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1640143132 is about 40498.6806204844. The cubic root of 1640143132 is about 1179.3080142734.

Adding to 1640143132 its reverse (2313410461), we get a palindrome (3953553593).

The spelling of 1640143132 in words is "one billion, six hundred forty million, one hundred forty-three thousand, one hundred thirty-two".