850145019 has 4 divisors (see below), whose sum is σ = 1133526696. Its totient is φ = 566763344.

The previous prime is 850145017. The next prime is 850145033. The reversal of 850145019 is 910541058.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 850145019 - 2¹ = 850145017 is a prime.

It is a super-2 number, since 2×850145019² = 1445493106661020722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (850145017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141690834 + ... + 141690839.

It is an arithmetic number, because the mean of its divisors is an integer number (283381674).

Almost surely, 2^850145019 is an apocalyptic number.

850145019 is a deficient number, since it is larger than the sum of its proper divisors (283381677).

850145019 is a wasteful number, since it uses less digits than its factorization.

850145019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283381676.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 850145019 is about 29157.2464234879. The cubic root of 850145019 is about 947.3221054529.

The spelling of 850145019 in words is "eight hundred fifty million, one hundred forty-five thousand, nineteen".