109205419 has 2 divisors, whose sum is σ = 109205420. Its totient is φ = 109205418.

The previous prime is 109205381. The next prime is 109205443. The reversal of 109205419 is 914502901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109205419 is a prime.

It is a super-2 number, since 2×109205419² = 23851647077931122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109205819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54602709 + 54602710.

It is an arithmetic number, because the mean of its divisors is an integer number (54602710).

Almost surely, 2^109205419 is an apocalyptic number.

109205419 is a deficient number, since it is larger than the sum of its proper divisors (1).

109205419 is an equidigital number, since it uses as much as digits as its factorization.

109205419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 109205419 is about 10450.1396641385. The cubic root of 109205419 is about 477.9855083928.

The spelling of 109205419 in words is "one hundred nine million, two hundred five thousand, four hundred nineteen".