1965499818 has 16 divisors (see below), whose sum is σ = 3959694720. Its totient is φ = 650384096.

The previous prime is 1965499817. The next prime is 1965499819. The reversal of 1965499818 is 8189945691.

It is an interprime number because it is at equal distance from previous prime (1965499817) and next prime (1965499819).

It is not an unprimeable number, because it can be changed into a prime (1965499817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194738 + ... + 1196381.

It is an arithmetic number, because the mean of its divisors is an integer number (247480920).

Almost surely, 2^1965499818 is an apocalyptic number.

1965499818 is an abundant number, since it is smaller than the sum of its proper divisors (1994194902).

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

1965499818 is a wasteful number, since it uses less digits than its factorization.

1965499818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391261.

The product of its digits is 5598720, while the sum is 60.

The square root of 1965499818 is about 44333.9578427192. The cubic root of 1965499818 is about 1252.6344052003.

The spelling of 1965499818 in words is "one billion, nine hundred sixty-five million, four hundred ninety-nine thousand, eight hundred eighteen".