1078389723 has 16 divisors (see below), whose sum is σ = 1464374016. Its totient is φ = 705740640.

The previous prime is 1078389691. The next prime is 1078389743. The reversal of 1078389723 is 3279838701.

1078389723 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1078389723 - 2⁵ = 1078389691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078389743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49738 + ... + 68048.

It is an arithmetic number, because the mean of its divisors is an integer number (91523376).

Almost surely, 2^1078389723 is an apocalyptic number.

1078389723 is a deficient number, since it is larger than the sum of its proper divisors (385984293).

1078389723 is a wasteful number, since it uses less digits than its factorization.

1078389723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18674.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 1078389723 is about 32838.8447269389. The cubic root of 1078389723 is about 1025.4754004919.

The spelling of 1078389723 in words is "one billion, seventy-eight million, three hundred eighty-nine thousand, seven hundred twenty-three".