1426911978 has 8 divisors (see below), whose sum is σ = 2853823968. Its totient is φ = 475637324.

The previous prime is 1426911953. The next prime is 1426912009. The reversal of 1426911978 is 8791196241.

1426911978 is digitally balanced in base 4, 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.

1426911978 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118909326 + ... + 118909337.

It is an arithmetic number, because the mean of its divisors is an integer number (356727996).

Almost surely, 2^1426911978 is an apocalyptic number.

1426911978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1426911978 is a wasteful number, since it uses less digits than its factorization.

1426911978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237818668.

The product of its digits is 217728, while the sum is 48.

The square root of 1426911978 is about 37774.4884545112. The cubic root of 1426911978 is about 1125.8116225180.

The spelling of 1426911978 in words is "one billion, four hundred twenty-six million, nine hundred eleven thousand, nine hundred seventy-eight".