1421381867 has 2 divisors, whose sum is σ = 1421381868. Its totient is φ = 1421381866.

The previous prime is 1421381851. The next prime is 1421381881. The reversal of 1421381867 is 7681831241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421381867 - 2⁴ = 1421381851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421381827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710690933 + 710690934.

It is an arithmetic number, because the mean of its divisors is an integer number (710690934).

Almost surely, 2^1421381867 is an apocalyptic number.

1421381867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421381867 is an equidigital number, since it uses as much as digits as its factorization.

1421381867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 1421381867 is about 37701.2183755379. The cubic root of 1421381867 is about 1124.3553487279.

The spelling of 1421381867 in words is "one billion, four hundred twenty-one million, three hundred eighty-one thousand, eight hundred sixty-seven".