1671662542 has 8 divisors (see below), whose sum is σ = 2735447832. Its totient is φ = 759846600.

The previous prime is 1671662527. The next prime is 1671662543. The reversal of 1671662542 is 2452661761.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1671662495 and 1671662504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671662543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37992309 + ... + 37992352.

It is an arithmetic number, because the mean of its divisors is an integer number (341930979).

Almost surely, 2^1671662542 is an apocalyptic number.

1671662542 is a deficient number, since it is larger than the sum of its proper divisors (1063785290).

1671662542 is a wasteful number, since it uses less digits than its factorization.

1671662542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75984674.

The product of its digits is 120960, while the sum is 40.

The square root of 1671662542 is about 40885.9699897165. The cubic root of 1671662542 is about 1186.8145728230.

The spelling of 1671662542 in words is "one billion, six hundred seventy-one million, six hundred sixty-two thousand, five hundred forty-two".