1851268996 has 12 divisors (see below), whose sum is σ = 3271797900. Its totient is φ = 916469600.

The previous prime is 1851268973. The next prime is 1851268997. The reversal of 1851268996 is 6998621581.

It can be written as a sum of positive squares in 2 ways, for example, as 975937600 + 875331396 = 31240^2 + 29586^2 .

It is not an unprimeable number, because it can be changed into a prime (1851268997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2290771 + ... + 2291578.

It is an arithmetic number, because the mean of its divisors is an integer number (272649825).

Almost surely, 2^1851268996 is an apocalyptic number.

It is an amenable number.

1851268996 is a deficient number, since it is larger than the sum of its proper divisors (1420528904).

1851268996 is a wasteful number, since it uses less digits than its factorization.

1851268996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582454 (or 4582452 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 55.

The square root of 1851268996 is about 43026.3755852152. The cubic root of 1851268996 is about 1227.8816504687.

The spelling of 1851268996 in words is "one billion, eight hundred fifty-one million, two hundred sixty-eight thousand, nine hundred ninety-six".