1679999974 has 8 divisors (see below), whose sum is σ = 2526479280. Its totient is φ = 837840216.

The previous prime is 1679999947. The next prime is 1679999983. The reversal of 1679999974 is 4799999761.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078914 + ... + 1080469.

It is an arithmetic number, because the mean of its divisors is an integer number (315809910).

Almost surely, 2^1679999974 is an apocalyptic number.

1679999974 is a deficient number, since it is larger than the sum of its proper divisors (846479306).

1679999974 is a wasteful number, since it uses less digits than its factorization.

1679999974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159774.

The product of its digits is 69441624, while the sum is 70.

The square root of 1679999974 is about 40987.8027466709. The cubic root of 1679999974 is about 1188.7843844200.

The spelling of 1679999974 in words is "one billion, six hundred seventy-nine million, nine hundred ninety-nine thousand, nine hundred seventy-four".