3887326813 has 4 divisors (see below), whose sum is σ = 3890991708. Its totient is φ = 3883661920.

The previous prime is 3887326787. The next prime is 3887326823. The reversal of 3887326813 is 3186237883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3186237883 = 1033 ⋅3084451.

It can be written as a sum of positive squares in 2 ways, for example, as 1666843929 + 2220482884 = 40827^2 + 47122^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887326813 - 2²¹ = 3885229661 is a prime.

It is a super-2 number, since 2×3887326813² = 30222619502137473938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887326823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830856 + ... + 1832977.

It is an arithmetic number, because the mean of its divisors is an integer number (972747927).

Almost surely, 2^3887326813 is an apocalyptic number.

It is an amenable number.

3887326813 is a deficient number, since it is larger than the sum of its proper divisors (3664895).

3887326813 is a wasteful number, since it uses less digits than its factorization.

3887326813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664894.

The product of its digits is 1161216, while the sum is 49.

The square root of 3887326813 is about 62348.4307180221. The cubic root of 3887326813 is about 1572.3540777357.

The spelling of 3887326813 in words is "three billion, eight hundred eighty-seven million, three hundred twenty-six thousand, eight hundred thirteen".