285046919 has 2 divisors, whose sum is σ = 285046920. Its totient is φ = 285046918.

The previous prime is 285046901. The next prime is 285046921. The reversal of 285046919 is 919640582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285046919 - 2¹⁶ = 284981383 is a prime.

It is a super-2 number, since 2×285046919² = 162503492062785122, which contains 22 as substring.

Together with 285046921, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285046919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285046999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142523459 + 142523460.

It is an arithmetic number, because the mean of its divisors is an integer number (142523460).

Almost surely, 2^285046919 is an apocalyptic number.

285046919 is a deficient number, since it is larger than the sum of its proper divisors (1).

285046919 is an equidigital number, since it uses as much as digits as its factorization.

285046919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 285046919 is about 16883.3325797960. The cubic root of 285046919 is about 658.1205475995.

The spelling of 285046919 in words is "two hundred eighty-five million, forty-six thousand, nine hundred nineteen".