1678947954 has 8 divisors (see below), whose sum is σ = 3357895920. Its totient is φ = 559649316.

The previous prime is 1678947937. The next prime is 1678947967. The reversal of 1678947954 is 4597498761.

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

1678947954 is an admirable number.

It is a super-2 number, since 2×1678947954² = 5637732464481572232, which contains 22 as substring.

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, 139912324 + ... + 139912335.

It is an arithmetic number, because the mean of its divisors is an integer number (419736990).

Almost surely, 2^1678947954 is an apocalyptic number.

1678947954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1678947954 is a wasteful number, since it uses less digits than its factorization.

1678947954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279824664.

The product of its digits is 15240960, while the sum is 60.

The square root of 1678947954 is about 40974.9674069425. The cubic root of 1678947954 is about 1188.5361927322.

The spelling of 1678947954 in words is "one billion, six hundred seventy-eight million, nine hundred forty-seven thousand, nine hundred fifty-four".