3782978842 has 4 divisors (see below), whose sum is σ = 5674468266. Its totient is φ = 1891489420.

The previous prime is 3782978819. The next prime is 3782978851. The reversal of 3782978842 is 2488792873.

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., 3224081961 + 558896881 = 56781^2 + 23641^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945744709 + ... + 945744712.

Almost surely, 2^3782978842 is an apocalyptic number.

3782978842 is a deficient number, since it is larger than the sum of its proper divisors (1891489424).

3782978842 is a wasteful number, since it uses less digits than its factorization.

3782978842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891489423.

The product of its digits is 10838016, while the sum is 58.

The square root of 3782978842 is about 61505.9252592789. The cubic root of 3782978842 is about 1558.1573193963.

The spelling of 3782978842 in words is "three billion, seven hundred eighty-two million, nine hundred seventy-eight thousand, eight hundred forty-two".