1457677813 has 4 divisors (see below), whose sum is σ = 1458559180. Its totient is φ = 1456796448.

The previous prime is 1457677807. The next prime is 1457677829. The reversal of 1457677813 is 3187767541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 542796804 + 914881009 = 23298^2 + 30247^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457677813 - 2⁹ = 1457677301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1457677843) 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, 438198 + ... + 441511.

It is an arithmetic number, because the mean of its divisors is an integer number (364639795).

Almost surely, 2^1457677813 is an apocalyptic number.

It is an amenable number.

1457677813 is a deficient number, since it is larger than the sum of its proper divisors (881367).

1457677813 is an equidigital number, since it uses as much as digits as its factorization.

1457677813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881366.

The product of its digits is 987840, while the sum is 49.

The square root of 1457677813 is about 38179.5470507443. The cubic root of 1457677813 is about 1133.8454140232.

The spelling of 1457677813 in words is "one billion, four hundred fifty-seven million, six hundred seventy-seven thousand, eight hundred thirteen".