1083867391 has 2 divisors, whose sum is σ = 1083867392. Its totient is φ = 1083867390.

The previous prime is 1083867383. The next prime is 1083867397. The reversal of 1083867391 is 1937683801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1083867391 - 2³ = 1083867383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1083867397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541933695 + 541933696.

It is an arithmetic number, because the mean of its divisors is an integer number (541933696).

Almost surely, 2^1083867391 is an apocalyptic number.

1083867391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1083867391 is an equidigital number, since it uses as much as digits as its factorization.

1083867391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1083867391 is about 32922.1413489463. The cubic root of 1083867391 is about 1027.2087656992.

The spelling of 1083867391 in words is "one billion, eighty-three million, eight hundred sixty-seven thousand, three hundred ninety-one".