1078923457 has 2 divisors, whose sum is σ = 1078923458. Its totient is φ = 1078923456.

The previous prime is 1078923451. The next prime is 1078923497. The reversal of 1078923457 is 7543298701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912100401 + 166823056 = 30201^2 + 12916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1078923457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078923451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539461728 + 539461729.

It is an arithmetic number, because the mean of its divisors is an integer number (539461729).

Almost surely, 2^1078923457 is an apocalyptic number.

It is an amenable number.

1078923457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078923457 is an equidigital number, since it uses as much as digits as its factorization.

1078923457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 1078923457 is about 32846.9702864663. The cubic root of 1078923457 is about 1025.6445541854.

The spelling of 1078923457 in words is "one billion, seventy-eight million, nine hundred twenty-three thousand, four hundred fifty-seven".