1205616104 has 64 divisors (see below), whose sum is σ = 2847519360. Its totient is φ = 464855040.

The previous prime is 1205616091. The next prime is 1205616107. The reversal of 1205616104 is 4016165021.

It is not an unprimeable number, because it can be changed into a prime (1205616107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49664 + ... + 69840.

It is an arithmetic number, because the mean of its divisors is an integer number (44492490).

Almost surely, 2^1205616104 is an apocalyptic number.

1205616104 is a gapful number since it is divisible by the number (14) 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 1205616104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1423759680).

1205616104 is an abundant number, since it is smaller than the sum of its proper divisors (1641903256).

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

1205616104 is a wasteful number, since it uses less digits than its factorization.

1205616104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20298 (or 20294 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1205616104 is about 34721.9830078871. The cubic root of 1205616104 is about 1064.3137677712.

The spelling of 1205616104 in words is "one billion, two hundred five million, six hundred sixteen thousand, one hundred four".