1201717160 has 144 divisors (see below), whose sum is σ = 3219434100. Its totient is φ = 402479616.

The previous prime is 1201717157. The next prime is 1201717211. The reversal of 1201717160 is 617171021.

It can be written as a sum of positive squares in 2 ways, for example, as 1135555204 + 66161956 = 33698^2 + 8134^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13502396 + ... + 13502484.

Almost surely, 2^1201717160 is an apocalyptic number.

1201717160 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 1201717160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609717050).

1201717160 is an abundant number, since it is smaller than the sum of its proper divisors (2017716940).

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

1201717160 is an equidigital number, since it uses as much as digits as its factorization.

1201717160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 26.

The square root of 1201717160 is about 34665.7923607697. The cubic root of 1201717160 is about 1063.1652039304.

Adding to 1201717160 its reverse (617171021), we get a palindrome (1818888181).

The spelling of 1201717160 in words is "one billion, two hundred one million, seven hundred seventeen thousand, one hundred sixty".