1203090816 has 192 divisors, whose sum is σ = 3498400080. Its totient is φ = 365985792.

The previous prime is 1203090809. The next prime is 1203090817. The reversal of 1203090816 is 6180903021.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203090817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4105966 + ... + 4106258.

Almost surely, 2^1203090816 is an apocalyptic number.

1203090816 is a gapful number since it is divisible by the number (16) 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 1203090816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749200040).

1203090816 is an abundant number, since it is smaller than the sum of its proper divisors (2295309264).

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

1203090816 is a wasteful number, since it uses less digits than its factorization.

1203090816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1203090816 is about 34685.5995479392. The cubic root of 1203090816 is about 1063.5701431302.

Adding to 1203090816 its reverse (6180903021), we get a palindrome (7383993837).

The spelling of 1203090816 in words is "one billion, two hundred three million, ninety thousand, eight hundred sixteen".