1078392457 has 2 divisors, whose sum is σ = 1078392458. Its totient is φ = 1078392456.

The previous prime is 1078392439. The next prime is 1078392479. The reversal of 1078392457 is 7542938701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067263561 + 11128896 = 32669^2 + 3336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078392457 - 2²³ = 1070003849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078390457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539196228 + 539196229.

It is an arithmetic number, because the mean of its divisors is an integer number (539196229).

Almost surely, 2^1078392457 is an apocalyptic number.

It is an amenable number.

1078392457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078392457 is an equidigital number, since it uses as much as digits as its factorization.

1078392457 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1078392457 is about 32838.8863544427. The cubic root of 1078392457 is about 1025.4762671072.

The spelling of 1078392457 in words is "one billion, seventy-eight million, three hundred ninety-two thousand, four hundred fifty-seven".