816432037 has 2 divisors, whose sum is σ = 816432038. Its totient is φ = 816432036.

The previous prime is 816432031. The next prime is 816432049. The reversal of 816432037 is 730234618.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791521956 + 24910081 = 28134^2 + 4991^2 .

It is a cyclic number.

It is not a de Polignac number, because 816432037 - 2¹¹ = 816429989 is a prime.

It is a super-2 number, since 2×816432037² = 1333122542079938738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 816431993 and 816432011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816432031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408216018 + 408216019.

It is an arithmetic number, because the mean of its divisors is an integer number (408216019).

Almost surely, 2^816432037 is an apocalyptic number.

It is an amenable number.

816432037 is a deficient number, since it is larger than the sum of its proper divisors (1).

816432037 is an equidigital number, since it uses as much as digits as its factorization.

816432037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 816432037 is about 28573.2748735597. The cubic root of 816432037 is about 934.6306364173.

The spelling of 816432037 in words is "eight hundred sixteen million, four hundred thirty-two thousand, thirty-seven".