1208389560 has 128 divisors (see below), whose sum is σ = 4151278080. Its totient is φ = 275655168.

The previous prime is 1208389543. The next prime is 1208389583. The reversal of 1208389560 is 659838021.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547419 + ... + 549621.

It is an arithmetic number, because the mean of its divisors is an integer number (32431860).

Almost surely, 2^1208389560 is an apocalyptic number.

1208389560 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 1208389560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2075639040).

1208389560 is an abundant number, since it is smaller than the sum of its proper divisors (2942888520).

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

1208389560 is a wasteful number, since it uses less digits than its factorization.

1208389560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2873 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1208389560 is about 34761.8981069791. The cubic root of 1208389560 is about 1065.1292752328.

The spelling of 1208389560 in words is "one billion, two hundred eight million, three hundred eighty-nine thousand, five hundred sixty".