630190191 has 4 divisors (see below), whose sum is σ = 840253592. Its totient is φ = 420126792.

The previous prime is 630190163. The next prime is 630190217. The reversal of 630190191 is 191091036.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 630190191 - 2¹³ = 630181999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630190091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105031696 + ... + 105031701.

It is an arithmetic number, because the mean of its divisors is an integer number (210063398).

Almost surely, 2^630190191 is an apocalyptic number.

630190191 is a deficient number, since it is larger than the sum of its proper divisors (210063401).

630190191 is a wasteful number, since it uses less digits than its factorization.

630190191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210063400.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 630190191 is about 25103.5892055300. The cubic root of 630190191 is about 857.3481459517.

The spelling of 630190191 in words is "six hundred thirty million, one hundred ninety thousand, one hundred ninety-one".