3688878973 has 8 divisors (see below), whose sum is σ = 3999303000. Its totient is φ = 3382264128.

The previous prime is 3688878961. The next prime is 3688879001. The reversal of 3688878973 is 3798788863.

It can be written as a sum of positive squares in 4 ways, for example, as 79512889 + 3609366084 = 8917^2 + 60078^2 .

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 3688878973 - 2⁹ = 3688878461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3688878899 and 3688878908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688878173) 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, 950278 + ... + 954151.

It is an arithmetic number, because the mean of its divisors is an integer number (499912875).

Almost surely, 2^3688878973 is an apocalyptic number.

It is an amenable number.

3688878973 is a deficient number, since it is larger than the sum of its proper divisors (310424027).

3688878973 is a wasteful number, since it uses less digits than its factorization.

3688878973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904591.

The product of its digits is 97542144, while the sum is 67.

The square root of 3688878973 is about 60736.1422301417. The cubic root of 3688878973 is about 1545.1292083406.

The spelling of 3688878973 in words is "three billion, six hundred eighty-eight million, eight hundred seventy-eight thousand, nine hundred seventy-three".