3861679490 has 8 divisors (see below), whose sum is σ = 6951023100. Its totient is φ = 1544671792.

The previous prime is 3861679483. The next prime is 3861679499. The reversal of 3861679490 is 949761683.

It can be written as a sum of positive squares in 2 ways, for example, as 3326636329 + 535043161 = 57677^2 + 23131^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3861679499) 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, 193083965 + ... + 193083984.

Almost surely, 2^3861679490 is an apocalyptic number.

3861679490 is a deficient number, since it is larger than the sum of its proper divisors (3089343610).

3861679490 is a wasteful number, since it uses less digits than its factorization.

3861679490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386167956.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 3861679490 is about 62142.4129721401. The cubic root of 3861679490 is about 1568.8884839573. Note that the first 3 decimals are identical.

The spelling of 3861679490 in words is "three billion, eight hundred sixty-one million, six hundred seventy-nine thousand, four hundred ninety".