1632312197 has 2 divisors, whose sum is σ = 1632312198. Its totient is φ = 1632312196.

The previous prime is 1632312191. The next prime is 1632312257. The reversal of 1632312197 is 7912132361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1325396836 + 306915361 = 36406^2 + 17519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1632312197 - 2⁴ = 1632312181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1632312191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816156098 + 816156099.

It is an arithmetic number, because the mean of its divisors is an integer number (816156099).

Almost surely, 2^1632312197 is an apocalyptic number.

It is an amenable number.

1632312197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1632312197 is an equidigital number, since it uses as much as digits as its factorization.

1632312197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 1632312197 is about 40401.8835823282. The cubic root of 1632312197 is about 1177.4281333641.

The spelling of 1632312197 in words is "one billion, six hundred thirty-two million, three hundred twelve thousand, one hundred ninety-seven".