1080391901 has 2 divisors, whose sum is σ = 1080391902. Its totient is φ = 1080391900.

The previous prime is 1080391883. The next prime is 1080391937. The reversal of 1080391901 is 1091930801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1035166276 + 45225625 = 32174^2 + 6725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080391901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1080394901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540195950 + 540195951.

It is an arithmetic number, because the mean of its divisors is an integer number (540195951).

Almost surely, 2^1080391901 is an apocalyptic number.

It is an amenable number.

1080391901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080391901 is an equidigital number, since it uses as much as digits as its factorization.

1080391901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 1080391901 is about 32869.3154933290. The cubic root of 1080391901 is about 1026.1096532359.

The spelling of 1080391901 in words is "one billion, eighty million, three hundred ninety-one thousand, nine hundred one".