1090049591 has 2 divisors, whose sum is σ = 1090049592. Its totient is φ = 1090049590.

The previous prime is 1090049579. The next prime is 1090049617. The reversal of 1090049591 is 1959400901.

It is a weak prime.

It is an emirp because it is prime and its reverse (1959400901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1090049591 - 2¹⁴ = 1090033207 is a prime.

It is a super-2 number, since 2×1090049591² = 2376416221678534562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1090049561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545024795 + 545024796.

It is an arithmetic number, because the mean of its divisors is an integer number (545024796).

Almost surely, 2^1090049591 is an apocalyptic number.

1090049591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090049591 is an equidigital number, since it uses as much as digits as its factorization.

1090049591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 1090049591 is about 33015.8990639358. The cubic root of 1090049591 is about 1029.1580737367.

The spelling of 1090049591 in words is "one billion, ninety million, forty-nine thousand, five hundred ninety-one".