1671486457 has 4 divisors (see below), whose sum is σ = 1672185600. Its totient is φ = 1670787316.

The previous prime is 1671486451. The next prime is 1671486499. The reversal of 1671486457 is 7546841761.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1671486457 - 2¹⁵ = 1671453689 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 1671486457.

It is not an unprimeable number, because it can be changed into a prime (1671486451) 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, 345973 + ... + 350770.

It is an arithmetic number, because the mean of its divisors is an integer number (418046400).

Almost surely, 2^1671486457 is an apocalyptic number.

It is an amenable number.

1671486457 is a deficient number, since it is larger than the sum of its proper divisors (699143).

1671486457 is an equidigital number, since it uses as much as digits as its factorization.

1671486457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699142.

The product of its digits is 1128960, while the sum is 49.

The square root of 1671486457 is about 40883.8165659714. The cubic root of 1671486457 is about 1186.7729002213.

The spelling of 1671486457 in words is "one billion, six hundred seventy-one million, four hundred eighty-six thousand, four hundred fifty-seven".