1850989797 has 12 divisors (see below), whose sum is σ = 2674792224. Its totient is φ = 1233466920.

The previous prime is 1850989781. The next prime is 1850989817. The reversal of 1850989797 is 7979890581.

It is not a de Polignac number, because 1850989797 - 2⁴ = 1850989781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850989727) 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 11 ways as a sum of consecutive naturals, for example, 20953 + ... + 64350.

It is an arithmetic number, because the mean of its divisors is an integer number (222899352).

Almost surely, 2^1850989797 is an apocalyptic number.

It is an amenable number.

1850989797 is a deficient number, since it is larger than the sum of its proper divisors (823802427).

1850989797 is a wasteful number, since it uses less digits than its factorization.

1850989797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87720 (or 87717 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The square root of 1850989797 is about 43023.1309530118. The cubic root of 1850989797 is about 1227.8199197378.

The spelling of 1850989797 in words is "one billion, eight hundred fifty million, nine hundred eighty-nine thousand, seven hundred ninety-seven".