1201116544 has 16 divisors (see below), whose sum is σ = 2392849620. Its totient is φ = 600558208.

The previous prime is 1201116517. The next prime is 1201116547. The reversal of 1201116544 is 4456111021.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201116547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4691734 + ... + 4691989.

Almost surely, 2^1201116544 is an apocalyptic number.

It is an amenable number.

1201116544 is a deficient number, since it is larger than the sum of its proper divisors (1191733076).

1201116544 is an frugal number, since it uses more digits than its factorization.

1201116544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9383737 (or 9383725 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1201116544 is about 34657.1283288157. The cubic root of 1201116544 is about 1062.9880517503.

Adding to 1201116544 its reverse (4456111021), we get a palindrome (5657227565).

The spelling of 1201116544 in words is "one billion, two hundred one million, one hundred sixteen thousand, five hundred forty-four".