3678123668 has 6 divisors (see below), whose sum is σ = 6436716426. Its totient is φ = 1839061832.

The previous prime is 3678123641. The next prime is 3678123677. The reversal of 3678123668 is 8663218763.

It can be written as a sum of positive squares in only one way, i.e., 3380492164 + 297631504 = 58142^2 + 17252^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459765455 + ... + 459765462.

It is an arithmetic number, because the mean of its divisors is an integer number (1072786071).

Almost surely, 2^3678123668 is an apocalyptic number.

It is an amenable number.

3678123668 is a deficient number, since it is larger than the sum of its proper divisors (2758592758).

3678123668 is a wasteful number, since it uses less digits than its factorization.

3678123668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919530921 (or 919530919 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 3678123668 is about 60647.5363720572. The cubic root of 3678123668 is about 1543.6260856616.

The spelling of 3678123668 in words is "three billion, six hundred seventy-eight million, one hundred twenty-three thousand, six hundred sixty-eight".