201909419 has 2 divisors, whose sum is σ = 201909420. Its totient is φ = 201909418.

The previous prime is 201909377. The next prime is 201909427. The reversal of 201909419 is 914909102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201909419 - 2¹² = 201905323 is a prime.

It is a super-2 number, since 2×201909419² = 81534826961835122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_11178863 and since 201909419 and 11178863 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (201909439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100954709 + 100954710.

It is an arithmetic number, because the mean of its divisors is an integer number (100954710).

Almost surely, 2^201909419 is an apocalyptic number.

201909419 is a deficient number, since it is larger than the sum of its proper divisors (1).

201909419 is an equidigital number, since it uses as much as digits as its factorization.

201909419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 201909419 is about 14209.4834177742. The cubic root of 201909419 is about 586.6587146319.

The spelling of 201909419 in words is "two hundred one million, nine hundred nine thousand, four hundred nineteen".