851148737 has 4 divisors (see below), whose sum is σ = 851344836. Its totient is φ = 850952640.

The previous prime is 851148731. The next prime is 851148743. The reversal of 851148737 is 737841158.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (851148731) and next prime (851148743).

It can be written as a sum of positive squares in 2 ways, for example, as 496353841 + 354794896 = 22279^2 + 18836^2 .

It is a cyclic number.

It is not a de Polignac number, because 851148737 - 2¹² = 851144641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851148731) 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 3 ways as a sum of consecutive naturals, for example, 91388 + ... + 100269.

It is an arithmetic number, because the mean of its divisors is an integer number (212836209).

Almost surely, 2^851148737 is an apocalyptic number.

It is an amenable number.

851148737 is a deficient number, since it is larger than the sum of its proper divisors (196099).

851148737 is a wasteful number, since it uses less digits than its factorization.

851148737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196098.

The product of its digits is 188160, while the sum is 44.

The square root of 851148737 is about 29174.4534995945. The cubic root of 851148737 is about 947.6947753192.

The spelling of 851148737 in words is "eight hundred fifty-one million, one hundred forty-eight thousand, seven hundred thirty-seven".