457349813 has 4 divisors (see below), whose sum is σ = 458441760. Its totient is φ = 456257868.

The previous prime is 457349743. The next prime is 457349819. The reversal of 457349813 is 318943754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 318943754 = 2 ⋅159471877.

It is a cyclic number.

It is not a de Polignac number, because 457349813 - 2¹⁰ = 457348789 is a prime.

It is a super-2 number, since 2×457349813² = 418337702902269938, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457349819) 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, 545345 + ... + 546182.

It is an arithmetic number, because the mean of its divisors is an integer number (114610440).

Almost surely, 2^457349813 is an apocalyptic number.

It is an amenable number.

457349813 is a deficient number, since it is larger than the sum of its proper divisors (1091947).

457349813 is a wasteful number, since it uses less digits than its factorization.

457349813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091946.

The product of its digits is 362880, while the sum is 44.

The square root of 457349813 is about 21385.7385423090. The cubic root of 457349813 is about 770.4589454915.

The spelling of 457349813 in words is "four hundred fifty-seven million, three hundred forty-nine thousand, eight hundred thirteen".