1375861567 has 2 divisors, whose sum is σ = 1375861568. Its totient is φ = 1375861566.

The previous prime is 1375861519. The next prime is 1375861589. The reversal of 1375861567 is 7651685731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1375861567 - 2⁷ = 1375861439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1375861567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375861517) 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, 687930783 + 687930784.

It is an arithmetic number, because the mean of its divisors is an integer number (687930784).

Almost surely, 2^1375861567 is an apocalyptic number.

1375861567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375861567 is an equidigital number, since it uses as much as digits as its factorization.

1375861567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 1375861567 is about 37092.6079832626. The cubic root of 1375861567 is about 1112.2222522891. Note that the first 4 decimals are identical.

The spelling of 1375861567 in words is "one billion, three hundred seventy-five million, eight hundred sixty-one thousand, five hundred sixty-seven".