1961850116 has 24 divisors (see below), whose sum is σ = 3760548120. Its totient is φ = 891387392.

The previous prime is 1961850109. The next prime is 1961850119. The reversal of 1961850116 is 6110581691.

It can be written as a sum of positive squares in 4 ways, for example, as 181010116 + 1780840000 = 13454^2 + 42200^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1961850116.

It is not an unprimeable number, because it can be changed into a prime (1961850119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495455 + ... + 499398.

It is an arithmetic number, because the mean of its divisors is an integer number (156689505).

Almost surely, 2^1961850116 is an apocalyptic number.

It is an amenable number.

1961850116 is a deficient number, since it is larger than the sum of its proper divisors (1798698004).

1961850116 is a wasteful number, since it uses less digits than its factorization.

1961850116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994903 (or 994901 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 1961850116 is about 44292.7772441512. Note that the first 3 decimals coincide. The cubic root of 1961850116 is about 1251.8585932154.

The spelling of 1961850116 in words is "one billion, nine hundred sixty-one million, eight hundred fifty thousand, one hundred sixteen".