1080991349 has 2 divisors, whose sum is σ = 1080991350. Its totient is φ = 1080991348.

The previous prime is 1080991337. The next prime is 1080991357. The reversal of 1080991349 is 9431990801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057420324 + 23571025 = 32518^2 + 4855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080991349 is a prime.

It is a super-2 number, since 2×1080991349² = 2337084593225679602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1080991369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540495674 + 540495675.

It is an arithmetic number, because the mean of its divisors is an integer number (540495675).

Almost surely, 2^1080991349 is an apocalyptic number.

It is an amenable number.

1080991349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080991349 is an equidigital number, since it uses as much as digits as its factorization.

1080991349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 1080991349 is about 32878.4328854038. The cubic root of 1080991349 is about 1026.2993947710.

The spelling of 1080991349 in words is "one billion, eighty million, nine hundred ninety-one thousand, three hundred forty-nine".