3918496978 has 8 divisors (see below), whose sum is σ = 6412086000. Its totient is φ = 1781134980.

The previous prime is 3918496919. The next prime is 3918496979. The reversal of 3918496978 is 8796948193.

3918496978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (3918496979) 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, 89056728 + ... + 89056771.

It is an arithmetic number, because the mean of its divisors is an integer number (801510750).

Almost surely, 2^3918496978 is an apocalyptic number.

3918496978 is a deficient number, since it is larger than the sum of its proper divisors (2493589022).

3918496978 is a wasteful number, since it uses less digits than its factorization.

3918496978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178113512.

The product of its digits is 23514624, while the sum is 64.

The square root of 3918496978 is about 62597.8991500514. The cubic root of 3918496978 is about 1576.5454859856.

The spelling of 3918496978 in words is "three billion, nine hundred eighteen million, four hundred ninety-six thousand, nine hundred seventy-eight".