1087268639 has 2 divisors, whose sum is σ = 1087268640. Its totient is φ = 1087268638.

The previous prime is 1087268617. The next prime is 1087268641. The reversal of 1087268639 is 9368627801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1087268639 - 2²⁴ = 1070491423 is a prime.

It is a Sophie Germain prime.

Together with 1087268641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087268669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543634319 + 543634320.

It is an arithmetic number, because the mean of its divisors is an integer number (543634320).

Almost surely, 2^1087268639 is an apocalyptic number.

1087268639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087268639 is an equidigital number, since it uses as much as digits as its factorization.

1087268639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1087268639 is about 32973.7568226613. The cubic root of 1087268639 is about 1028.2821268758.

The spelling of 1087268639 in words is "one billion, eighty-seven million, two hundred sixty-eight thousand, six hundred thirty-nine".