3962167778 has 4 divisors (see below), whose sum is σ = 5943251670. Its totient is φ = 1981083888.

The previous prime is 3962167739. The next prime is 3962167787. The reversal of 3962167778 is 8777612693.

3962167778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 3960562489 + 1605289 = 62933^2 + 1267^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990541943 + ... + 990541946.

Almost surely, 2^3962167778 is an apocalyptic number.

3962167778 is a deficient number, since it is larger than the sum of its proper divisors (1981083892).

3962167778 is a wasteful number, since it uses less digits than its factorization.

3962167778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981083891.

The product of its digits is 5334336, while the sum is 56.

The square root of 3962167778 is about 62945.7526605251. The cubic root of 3962167778 is about 1582.3806149356.

The spelling of 3962167778 in words is "three billion, nine hundred sixty-two million, one hundred sixty-seven thousand, seven hundred seventy-eight".