1201601864 has 16 divisors (see below), whose sum is σ = 2270745600. Its totient is φ = 596069712.

The previous prime is 1201601839. The next prime is 1201601867. The reversal of 1201601864 is 4681061021.

It is not an unprimeable number, because it can be changed into a prime (1201601867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590324 + ... + 592355.

It is an arithmetic number, because the mean of its divisors is an integer number (141921600).

Almost surely, 2^1201601864 is an apocalyptic number.

It is an amenable number.

1201601864 is a deficient number, since it is larger than the sum of its proper divisors (1069143736).

1201601864 is a wasteful number, since it uses less digits than its factorization.

1201601864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182812 (or 1182808 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1201601864 is about 34664.1293558630. The cubic root of 1201601864 is about 1063.1312018597.

Adding to 1201601864 its reverse (4681061021), we get a palindrome (5882662885).

The spelling of 1201601864 in words is "one billion, two hundred one million, six hundred one thousand, eight hundred sixty-four".