1916668677 has 24 divisors (see below), whose sum is σ = 3210292288. Its totient is φ = 995670720.

The previous prime is 1916668669. The next prime is 1916668693. The reversal of 1916668677 is 7768666191.

It is not a de Polignac number, because 1916668677 - 2³ = 1916668669 is a prime.

It is a super-3 number, since 3×1916668677³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916668477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374608 + ... + 379689.

Almost surely, 2^1916668677 is an apocalyptic number.

It is an amenable number.

1916668677 is a deficient number, since it is larger than the sum of its proper divisors (1293623611).

1916668677 is a wasteful number, since it uses less digits than its factorization.

1916668677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754329 (or 754318 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 1916668677 is about 43779.7747481642. The cubic root of 1916668677 is about 1242.1737532459.

The spelling of 1916668677 in words is "one billion, nine hundred sixteen million, six hundred sixty-eight thousand, six hundred seventy-seven".