850438019 has 2 divisors, whose sum is σ = 850438020. Its totient is φ = 850438018.

The previous prime is 850437943. The next prime is 850438051. The reversal of 850438019 is 910834058.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850438019 is a prime.

It is a super-2 number, since 2×850438019² = 1446489648321288722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (850438619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425219009 + 425219010.

It is an arithmetic number, because the mean of its divisors is an integer number (425219010).

Almost surely, 2^850438019 is an apocalyptic number.

850438019 is a deficient number, since it is larger than the sum of its proper divisors (1).

850438019 is an equidigital number, since it uses as much as digits as its factorization.

850438019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 850438019 is about 29162.2704705926. The cubic root of 850438019 is about 947.4309235523.

The spelling of 850438019 in words is "eight hundred fifty million, four hundred thirty-eight thousand, nineteen".