1640160463 has 4 divisors (see below), whose sum is σ = 1640645280. Its totient is φ = 1639675648.

The previous prime is 1640160461. The next prime is 1640160499. The reversal of 1640160463 is 3640610461.

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

It is a cyclic number.

It is not a de Polignac number, because 1640160463 - 2¹ = 1640160461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640160461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237298 + ... + 244111.

It is an arithmetic number, because the mean of its divisors is an integer number (410161320).

Almost surely, 2^1640160463 is an apocalyptic number.

1640160463 is a deficient number, since it is larger than the sum of its proper divisors (484817).

1640160463 is an equidigital number, since it uses as much as digits as its factorization.

1640160463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484816.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1640160463 is about 40498.8945898527. The cubic root of 1640160463 is about 1179.3121680806.

The spelling of 1640160463 in words is "one billion, six hundred forty million, one hundred sixty thousand, four hundred sixty-three".