3867875645 has 8 divisors (see below), whose sum is σ = 4642234200. Its totient is φ = 3093778240.

The previous prime is 3867875621. The next prime is 3867875659. The reversal of 3867875645 is 5465787683.

It can be written as a sum of positive squares in 4 ways, for example, as 334048729 + 3533826916 = 18277^2 + 59446^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-3867875645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31070 + ... + 93279.

It is an arithmetic number, because the mean of its divisors is an integer number (580279275).

Almost surely, 2^3867875645 is an apocalyptic number.

It is an amenable number.

3867875645 is a deficient number, since it is larger than the sum of its proper divisors (774358555).

3867875645 is a wasteful number, since it uses less digits than its factorization.

3867875645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130575.

The product of its digits is 33868800, while the sum is 59.

The square root of 3867875645 is about 62192.2474670276. The cubic root of 3867875645 is about 1569.7271416491.

The spelling of 3867875645 in words is "three billion, eight hundred sixty-seven million, eight hundred seventy-five thousand, six hundred forty-five".