851020038 has 24 divisors (see below), whose sum is σ = 2011502376. Its totient is φ = 257884800.

The previous prime is 851020019. The next prime is 851020039. The reversal of 851020038 is 830020158.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 851019993 and 851020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851020039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2148843 + ... + 2149238.

It is an arithmetic number, because the mean of its divisors is an integer number (83812599).

Almost surely, 2^851020038 is an apocalyptic number.

851020038 is an abundant number, since it is smaller than the sum of its proper divisors (1160482338).

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

851020038 is a wasteful number, since it uses less digits than its factorization.

851020038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298100 (or 4298097 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 851020038 is about 29172.2477365046. The cubic root of 851020038 is about 947.6470071237.

The spelling of 851020038 in words is "eight hundred fifty-one million, twenty thousand, thirty-eight".