1457938705 has 4 divisors (see below), whose sum is σ = 1749526452. Its totient is φ = 1166350960.

The previous prime is 1457938661. The next prime is 1457938709. The reversal of 1457938705 is 5078397541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5078397541 = 7 ⋅725485363.

It can be written as a sum of positive squares in 2 ways, for example, as 484748289 + 973190416 = 22017^2 + 31196^2 .

It is not a de Polignac number, because 1457938705 - 2⁹ = 1457938193 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1457938709) 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, 145793866 + ... + 145793875.

It is an arithmetic number, because the mean of its divisors is an integer number (437381613).

Almost surely, 2^1457938705 is an apocalyptic number.

It is an amenable number.

1457938705 is a deficient number, since it is larger than the sum of its proper divisors (291587747).

1457938705 is an equidigital number, since it uses as much as digits as its factorization.

1457938705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291587746.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 1457938705 is about 38182.9635439681. The cubic root of 1457938705 is about 1133.9130543821.

The spelling of 1457938705 in words is "one billion, four hundred fifty-seven million, nine hundred thirty-eight thousand, seven hundred five".