851473623 has 32 divisors (see below), whose sum is σ = 1524321792. Its totient is φ = 408297600.

The previous prime is 851473603. The next prime is 851473631. The reversal of 851473623 is 326374158.

851473623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 851473623 - 2⁸ = 851473367 is a prime.

It is a super-2 number, since 2×851473623² = 1450014661329492258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851473603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138768 + ... + 144773.

It is an arithmetic number, because the mean of its divisors is an integer number (47635056).

Almost surely, 2^851473623 is an apocalyptic number.

851473623 is a deficient number, since it is larger than the sum of its proper divisors (672848169).

851473623 is a wasteful number, since it uses less digits than its factorization.

851473623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283575.

The product of its digits is 120960, while the sum is 39.

The square root of 851473623 is about 29180.0209561268. The cubic root of 851473623 is about 947.8153392838.

It can be divided in two parts, 851 and 473623, that added together give a palindrome (474474).

The spelling of 851473623 in words is "eight hundred fifty-one million, four hundred seventy-three thousand, six hundred twenty-three".