3851630197 has 2 divisors, whose sum is σ = 3851630198. Its totient is φ = 3851630196.

The previous prime is 3851630137. The next prime is 3851630203. The reversal of 3851630197 is 7910361583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2878751716 + 972878481 = 53654^2 + 31191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3851630197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3851630137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1925815098 + 1925815099.

It is an arithmetic number, because the mean of its divisors is an integer number (1925815099).

Almost surely, 2^3851630197 is an apocalyptic number.

It is an amenable number.

3851630197 is a deficient number, since it is larger than the sum of its proper divisors (1).

3851630197 is an equidigital number, since it uses as much as digits as its factorization.

3851630197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 3851630197 is about 62061.5033414435. The cubic root of 3851630197 is about 1567.5263895532.

The spelling of 3851630197 in words is "three billion, eight hundred fifty-one million, six hundred thirty thousand, one hundred ninety-seven".