1457639459 has 4 divisors (see below), whose sum is σ = 1457757816. Its totient is φ = 1457521104.

The previous prime is 1457639371. The next prime is 1457639461. The reversal of 1457639459 is 9549367541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9549367541 = 7 ⋅1364195363.

It is a cyclic number.

It is not a de Polignac number, because 1457639459 - 2¹² = 1457635363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1457639459.

It is not an unprimeable number, because it can be changed into a prime (1457632459) 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, 38234 + ... + 66159.

It is an arithmetic number, because the mean of its divisors is an integer number (364439454).

Almost surely, 2^1457639459 is an apocalyptic number.

1457639459 is a deficient number, since it is larger than the sum of its proper divisors (118357).

1457639459 is a wasteful number, since it uses less digits than its factorization.

1457639459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118356.

The product of its digits is 4082400, while the sum is 53.

The square root of 1457639459 is about 38179.0447628015. The cubic root of 1457639459 is about 1133.8354694643.

The spelling of 1457639459 in words is "one billion, four hundred fifty-seven million, six hundred thirty-nine thousand, four hundred fifty-nine".