1678630197 has 8 divisors (see below), whose sum is σ = 2244625056. Its totient is φ = 1115861072.

The previous prime is 1678630169. The next prime is 1678630199. The reversal of 1678630197 is 7910368761.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1678630197 - 2¹⁶ = 1678564661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678630199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805218 + ... + 807299.

It is an arithmetic number, because the mean of its divisors is an integer number (280578132).

Almost surely, 2^1678630197 is an apocalyptic number.

It is an amenable number.

1678630197 is a deficient number, since it is larger than the sum of its proper divisors (565994859).

1678630197 is a wasteful number, since it uses less digits than its factorization.

1678630197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612867.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1678630197 is about 40971.0897707152. The cubic root of 1678630197 is about 1188.4612073776.

The spelling of 1678630197 in words is "one billion, six hundred seventy-eight million, six hundred thirty thousand, one hundred ninety-seven".