2781083898 has 12 divisors (see below), whose sum is σ = 6025681818. Its totient is φ = 927027960.

The previous prime is 2781083891. The next prime is 2781083909. The reversal of 2781083898 is 8983801872.

It can be written as a sum of positive squares in only one way, i.e., 2269283769 + 511800129 = 47637^2 + 22623^2 .

It is not an unprimeable number, because it can be changed into a prime (2781083891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77252313 + ... + 77252348.

Almost surely, 2^2781083898 is an apocalyptic number.

2781083898 is an abundant number, since it is smaller than the sum of its proper divisors (3244597920).

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

2781083898 is a wasteful number, since it uses less digits than its factorization.

2781083898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154504669 (or 154504666 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 2781083898 is about 52735.9829528188. The cubic root of 2781083898 is about 1406.2785856826.

The spelling of 2781083898 in words is "two billion, seven hundred eighty-one million, eighty-three thousand, eight hundred ninety-eight".