3874586209642 has 4 divisors (see below), whose sum is σ = 5811879314466. Its totient is φ = 1937293104820.

The previous prime is 3874586209633. The next prime is 3874586209643. The reversal of 3874586209642 is 2469026854783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3822615432801 + 51970776841 = 1955151^2 + 227971^2 .

It is not an unprimeable number, because it can be changed into a prime (3874586209643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968646552409 + ... + 968646552412.

Almost surely, 2^{3874586209642} is an apocalyptic number.

3874586209642 is a deficient number, since it is larger than the sum of its proper divisors (1937293104824).

3874586209642 is a wasteful number, since it uses less digits than its factorization.

3874586209642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937293104823.

The product of its (nonzero) digits is 139345920, while the sum is 64.

The spelling of 3874586209642 in words is "three trillion, eight hundred seventy-four billion, five hundred eighty-six million, two hundred nine thousand, six hundred forty-two".