1078040993 has 4 divisors (see below), whose sum is σ = 1078171440. Its totient is φ = 1077910548.

The previous prime is 1078040969. The next prime is 1078041001. The reversal of 1078040993 is 3990408701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3990408701 = 6599 ⋅604699.

It is a cyclic number.

It is not a de Polignac number, because 1078040993 - 2²⁰ = 1076992417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1078040993.

It is not an unprimeable number, because it can be changed into a prime (1078000993) 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, 51923 + ... + 69656.

It is an arithmetic number, because the mean of its divisors is an integer number (269542860).

Almost surely, 2^1078040993 is an apocalyptic number.

It is an amenable number.

1078040993 is a deficient number, since it is larger than the sum of its proper divisors (130447).

1078040993 is an equidigital number, since it uses as much as digits as its factorization.

1078040993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130446.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1078040993 is about 32833.5345797555. The cubic root of 1078040993 is about 1025.3648490576.

The spelling of 1078040993 in words is "one billion, seventy-eight million, forty thousand, nine hundred ninety-three".