202980191 has 2 divisors, whose sum is σ = 202980192. Its totient is φ = 202980190.

The previous prime is 202980179. The next prime is 202980209. The reversal of 202980191 is 191089202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202980191 - 2²² = 198785887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202980691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101490095 + 101490096.

It is an arithmetic number, because the mean of its divisors is an integer number (101490096).

Almost surely, 2^202980191 is an apocalyptic number.

202980191 is a deficient number, since it is larger than the sum of its proper divisors (1).

202980191 is an equidigital number, since it uses as much as digits as its factorization.

202980191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 202980191 is about 14247.1116721952. Note that the first 3 decimals coincide. The cubic root of 202980191 is about 587.6939487013.

The spelling of 202980191 in words is "two hundred two million, nine hundred eighty thousand, one hundred ninety-one".