1090738639 has 2 divisors, whose sum is σ = 1090738640. Its totient is φ = 1090738638.

The previous prime is 1090738609. The next prime is 1090738657. The reversal of 1090738639 is 9368370901.

It is a strong prime.

It is an emirp because it is prime and its reverse (9368370901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1090738639 - 2⁷ = 1090738511 is a prime.

It is a super-3 number, since 3×1090738639³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1090738609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545369319 + 545369320.

It is an arithmetic number, because the mean of its divisors is an integer number (545369320).

Almost surely, 2^1090738639 is an apocalyptic number.

1090738639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090738639 is an equidigital number, since it uses as much as digits as its factorization.

1090738639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1090738639 is about 33026.3325090752. The cubic root of 1090738639 is about 1029.3748803692.

The spelling of 1090738639 in words is "one billion, ninety million, seven hundred thirty-eight thousand, six hundred thirty-nine".