1457866849 has 4 divisors (see below), whose sum is σ = 1458885636. Its totient is φ = 1456848064.

The previous prime is 1457866811. The next prime is 1457866873. The reversal of 1457866849 is 9486687541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9486687541 = 27253 ⋅348097.

It can be written as a sum of positive squares in 2 ways, for example, as 1220244624 + 237622225 = 34932^2 + 15415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1457866849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1457866793 and 1457866802.

It is not an unprimeable number, because it can be changed into a prime (1457866549) 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, 507244 + ... + 510109.

It is an arithmetic number, because the mean of its divisors is an integer number (364721409).

Almost surely, 2^1457866849 is an apocalyptic number.

It is an amenable number.

1457866849 is a deficient number, since it is larger than the sum of its proper divisors (1018787).

1457866849 is a wasteful number, since it uses less digits than its factorization.

1457866849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018786.

The product of its digits is 11612160, while the sum is 58.

The square root of 1457866849 is about 38182.0225891715. The cubic root of 1457866849 is about 1133.8944253879.

The spelling of 1457866849 in words is "one billion, four hundred fifty-seven million, eight hundred sixty-six thousand, eight hundred forty-nine".