1201636260 has 144 divisors (see below), whose sum is σ = 4104801792. Its totient is φ = 281894400.

The previous prime is 1201636253. The next prime is 1201636297. The reversal of 1201636260 is 626361021.

1201636260 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 636 + 26 + 0 = 666.

1201636260 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51592 + ... + 71168.

It is an arithmetic number, because the mean of its divisors is an integer number (28505568).

Almost surely, 2^1201636260 is an apocalyptic number.

1201636260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201636260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052400896).

1201636260 is an abundant number, since it is smaller than the sum of its proper divisors (2903165532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201636260 is a wasteful number, since it uses less digits than its factorization.

1201636260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19634 (or 19629 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1201636260 is about 34664.6254847791. The cubic root of 1201636260 is about 1063.1413458497.

Adding to 1201636260 its reverse (626361021), we get a palindrome (1827997281).

The spelling of 1201636260 in words is "one billion, two hundred one million, six hundred thirty-six thousand, two hundred sixty".