1012738457 has 2 divisors, whose sum is σ = 1012738458. Its totient is φ = 1012738456.

The previous prime is 1012738453. The next prime is 1012738487. The reversal of 1012738457 is 7548372101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 901140361 + 111598096 = 30019^2 + 10564^2 .

It is an emirp because it is prime and its reverse (7548372101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012738457 - 2² = 1012738453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012738457.

It is not a weakly prime, because it can be changed into another prime (1012738453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506369228 + 506369229.

It is an arithmetic number, because the mean of its divisors is an integer number (506369229).

Almost surely, 2^1012738457 is an apocalyptic number.

It is an amenable number.

1012738457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012738457 is an equidigital number, since it uses as much as digits as its factorization.

1012738457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1012738457 is about 31823.5519230648. The cubic root of 1012738457 is about 1004.2282490457.

It can be divided in two parts, 10127 and 38457, that added together give a palindrome (48584).

The spelling of 1012738457 in words is "one billion, twelve million, seven hundred thirty-eight thousand, four hundred fifty-seven".