994145519 has 2 divisors, whose sum is σ = 994145520. Its totient is φ = 994145518.

The previous prime is 994145501. The next prime is 994145543. The reversal of 994145519 is 915541499.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994145519 is a prime.

It is a super-2 number, since 2×994145519² = 1976650625895558722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994145599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497072759 + 497072760.

It is an arithmetic number, because the mean of its divisors is an integer number (497072760).

Almost surely, 2^994145519 is an apocalyptic number.

994145519 is a deficient number, since it is larger than the sum of its proper divisors (1).

994145519 is an equidigital number, since it uses as much as digits as its factorization.

994145519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 47.

The square root of 994145519 is about 31530.0732476155. The cubic root of 994145519 is about 998.0446855707.

The spelling of 994145519 in words is "nine hundred ninety-four million, one hundred forty-five thousand, five hundred nineteen".