863189051 has 2 divisors, whose sum is σ = 863189052. Its totient is φ = 863189050.

The previous prime is 863188987. The next prime is 863189071. The reversal of 863189051 is 150981368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 863189051 - 2⁶ = 863188987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (863189071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431594525 + 431594526.

It is an arithmetic number, because the mean of its divisors is an integer number (431594526).

Almost surely, 2^863189051 is an apocalyptic number.

863189051 is a deficient number, since it is larger than the sum of its proper divisors (1).

863189051 is an equidigital number, since it uses as much as digits as its factorization.

863189051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 863189051 is about 29380.0791523781. The cubic root of 863189051 is about 952.1425514914.

The spelling of 863189051 in words is "eight hundred sixty-three million, one hundred eighty-nine thousand, fifty-one".