1641563596 has 24 divisors (see below), whose sum is σ = 3025756160. Its totient is φ = 777114000.

The previous prime is 1641563591. The next prime is 1641563597. The reversal of 1641563596 is 6953651461.

It is not an unprimeable number, because it can be changed into a prime (1641563591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142741 + ... + 153811.

Almost surely, 2^1641563596 is an apocalyptic number.

It is an amenable number.

1641563596 is a deficient number, since it is larger than the sum of its proper divisors (1384192564).

1641563596 is a wasteful number, since it uses less digits than its factorization.

1641563596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13045 (or 13043 counting only the distinct ones).

The product of its digits is 583200, while the sum is 46.

The square root of 1641563596 is about 40516.2139889699. The cubic root of 1641563596 is about 1179.6483669294.

The spelling of 1641563596 in words is "one billion, six hundred forty-one million, five hundred sixty-three thousand, five hundred ninety-six".