236440019 has 2 divisors, whose sum is σ = 236440020. Its totient is φ = 236440018.

The previous prime is 236440013. The next prime is 236440021. The reversal of 236440019 is 910044632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 236440019 - 2⁴ = 236440003 is a prime.

It is a super-2 number, since 2×236440019² = 111807765169440722, which contains 22 as substring.

Together with 236440021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 236439973 and 236440000.

It is not a weakly prime, because it can be changed into another prime (236440013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118220009 + 118220010.

It is an arithmetic number, because the mean of its divisors is an integer number (118220010).

Almost surely, 2^236440019 is an apocalyptic number.

236440019 is a deficient number, since it is larger than the sum of its proper divisors (1).

236440019 is an equidigital number, since it uses as much as digits as its factorization.

236440019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 236440019 is about 15376.6062250420. The cubic root of 236440019 is about 618.3584907695.

The spelling of 236440019 in words is "two hundred thirty-six million, four hundred forty thousand, nineteen".