1486257457 has 4 divisors (see below), whose sum is σ = 1488029760. Its totient is φ = 1484485156.

The previous prime is 1486257407. The next prime is 1486257481. The reversal of 1486257457 is 7547526841.

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: 7547526841 = 39233 ⋅192377.

It is a cyclic number.

It is not a de Polignac number, because 1486257457 - 2¹⁵ = 1486224689 is a prime.

It is a super-2 number, since 2×1486257457² = 4417922456976213698, which contains 22 as substring.

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 a self number, because there is not a number n which added to its sum of digits gives 1486257457.

It is not an unprimeable number, because it can be changed into a prime (1486257407) 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, 884893 + ... + 886570.

It is an arithmetic number, because the mean of its divisors is an integer number (372007440).

Almost surely, 2^1486257457 is an apocalyptic number.

It is an amenable number.

1486257457 is a deficient number, since it is larger than the sum of its proper divisors (1772303).

1486257457 is an equidigital number, since it uses as much as digits as its factorization.

1486257457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772302.

The product of its digits is 1881600, while the sum is 49.

The square root of 1486257457 is about 38552.0097660291. The cubic root of 1486257457 is about 1141.2076708923.

The spelling of 1486257457 in words is "one billion, four hundred eighty-six million, two hundred fifty-seven thousand, four hundred fifty-seven".