632040191 has 2 divisors, whose sum is σ = 632040192. Its totient is φ = 632040190.

The previous prime is 632040173. The next prime is 632040217. The reversal of 632040191 is 191040236.

It is an a-pointer prime, because the next prime (632040217) can be obtained adding 632040191 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-632040191 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 632040191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632040151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316020095 + 316020096.

It is an arithmetic number, because the mean of its divisors is an integer number (316020096).

Almost surely, 2^632040191 is an apocalyptic number.

632040191 is a deficient number, since it is larger than the sum of its proper divisors (1).

632040191 is an equidigital number, since it uses as much as digits as its factorization.

632040191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 632040191 is about 25140.4095233152. The cubic root of 632040191 is about 858.1862762820.

The spelling of 632040191 in words is "six hundred thirty-two million, forty thousand, one hundred ninety-one".