1662257485 has 8 divisors (see below), whose sum is σ = 2279667456. Its totient is φ = 1139833680.

The previous prime is 1662257477. The next prime is 1662257491. The reversal of 1662257485 is 5847522661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1662257485 - 2³ = 1662257477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23746501 + ... + 23746570.

It is an arithmetic number, because the mean of its divisors is an integer number (284958432).

Almost surely, 2^1662257485 is an apocalyptic number.

It is an amenable number.

1662257485 is a deficient number, since it is larger than the sum of its proper divisors (617409971).

1662257485 is an equidigital number, since it uses as much as digits as its factorization.

1662257485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47493083.

The product of its digits is 806400, while the sum is 46.

The square root of 1662257485 is about 40770.7920575502. The cubic root of 1662257485 is about 1184.5846455674.

The spelling of 1662257485 in words is "one billion, six hundred sixty-two million, two hundred fifty-seven thousand, four hundred eighty-five".