1995644227 has 2 divisors, whose sum is σ = 1995644228. Its totient is φ = 1995644226.

The previous prime is 1995644221. The next prime is 1995644249. The reversal of 1995644227 is 7224465991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1995644227 - 2¹¹ = 1995642179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1995644221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997822113 + 997822114.

It is an arithmetic number, because the mean of its divisors is an integer number (997822114).

Almost surely, 2^1995644227 is an apocalyptic number.

1995644227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995644227 is an equidigital number, since it uses as much as digits as its factorization.

1995644227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 1995644227 is about 44672.6339832341. The cubic root of 1995644227 is about 1259.0057300702.

The spelling of 1995644227 in words is "one billion, nine hundred ninety-five million, six hundred forty-four thousand, two hundred twenty-seven".