161876863 has 2 divisors, whose sum is σ = 161876864. Its totient is φ = 161876862.

The previous prime is 161876857. The next prime is 161876899. The reversal of 161876863 is 368678161.

It is a weak prime.

It is an emirp because it is prime and its reverse (368678161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161876863 - 2¹³ = 161868671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161876563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80938431 + 80938432.

It is an arithmetic number, because the mean of its divisors is an integer number (80938432).

Almost surely, 2^161876863 is an apocalyptic number.

161876863 is a deficient number, since it is larger than the sum of its proper divisors (1).

161876863 is an equidigital number, since it uses as much as digits as its factorization.

161876863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 161876863 is about 12723.0838635922. The cubic root of 161876863 is about 544.9980226060.

The spelling of 161876863 in words is "one hundred sixty-one million, eight hundred seventy-six thousand, eight hundred sixty-three".