1078491823 has 2 divisors, whose sum is σ = 1078491824. Its totient is φ = 1078491822.

The previous prime is 1078491803. The next prime is 1078491847. The reversal of 1078491823 is 3281948701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1078491823 - 2¹³ = 1078483631 is a prime.

It is a super-2 number, since 2×1078491823² = 2326289224555726658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1078491823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078491803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539245911 + 539245912.

It is an arithmetic number, because the mean of its divisors is an integer number (539245912).

Almost surely, 2^1078491823 is an apocalyptic number.

1078491823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078491823 is an equidigital number, since it uses as much as digits as its factorization.

1078491823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1078491823 is about 32840.3992515316. The cubic root of 1078491823 is about 1025.5077628596.

The spelling of 1078491823 in words is "one billion, seventy-eight million, four hundred ninety-one thousand, eight hundred twenty-three".