1078459091 has 4 divisors (see below), whose sum is σ = 1107606672. Its totient is φ = 1049311512.

The previous prime is 1078459087. The next prime is 1078459097. The reversal of 1078459091 is 1909548701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1909548701 = 2861 ⋅667441.

It is a cyclic number.

It is not a de Polignac number, because 1078459091 - 2² = 1078459087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078459097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14573735 + ... + 14573808.

It is an arithmetic number, because the mean of its divisors is an integer number (276901668).

Almost surely, 2^1078459091 is an apocalyptic number.

1078459091 is a deficient number, since it is larger than the sum of its proper divisors (29147581).

1078459091 is an equidigital number, since it uses as much as digits as its factorization.

1078459091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29147580.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1078459091 is about 32839.9008981452. The cubic root of 1078459091 is about 1025.4973881063.

The spelling of 1078459091 in words is "one billion, seventy-eight million, four hundred fifty-nine thousand, ninety-one".