1878220567 has 2 divisors, whose sum is σ = 1878220568. Its totient is φ = 1878220566.

The previous prime is 1878220523. The next prime is 1878220613. The reversal of 1878220567 is 7650228781.

It is an a-pointer prime, because the next prime (1878220613) can be obtained adding 1878220567 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1878220567 - 2²⁷ = 1744002839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1878220517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 939110283 + 939110284.

It is an arithmetic number, because the mean of its divisors is an integer number (939110284).

Almost surely, 2^1878220567 is an apocalyptic number.

1878220567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1878220567 is an equidigital number, since it uses as much as digits as its factorization.

1878220567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 1878220567 is about 43338.4421385910. The cubic root of 1878220567 is about 1233.8116423259.

The spelling of 1878220567 in words is "one billion, eight hundred seventy-eight million, two hundred twenty thousand, five hundred sixty-seven".