812219037 has 32 divisors (see below), whose sum is σ = 1284737280. Its totient is φ = 446584320.

The previous prime is 812219017. The next prime is 812219039. The reversal of 812219037 is 730912218.

It is not a de Polignac number, because 812219037 - 2¹¹ = 812216989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 812218989 and 812219007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812219039) 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, 188487 + ... + 192747.

It is an arithmetic number, because the mean of its divisors is an integer number (40148040).

Almost surely, 2^812219037 is an apocalyptic number.

812219037 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

812219037 is a deficient number, since it is larger than the sum of its proper divisors (472518243).

812219037 is a wasteful number, since it uses less digits than its factorization.

812219037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 812219037 is about 28499.4567842968. The cubic root of 812219037 is about 933.0202180827.

The spelling of 812219037 in words is "eight hundred twelve million, two hundred nineteen thousand, thirty-seven".