4054751978 has 4 divisors (see below), whose sum is σ = 6082127970. Its totient is φ = 2027375988.

The previous prime is 4054751941. The next prime is 4054751983. The reversal of 4054751978 is 8791574504.

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., 3922892689 + 131859289 = 62633^2 + 11483^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013687993 + ... + 1013687996.

Almost surely, 2^4054751978 is an apocalyptic number.

4054751978 is a deficient number, since it is larger than the sum of its proper divisors (2027375992).

4054751978 is a wasteful number, since it uses less digits than its factorization.

4054751978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027375991.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The square root of 4054751978 is about 63676.9344268394. The cubic root of 4054751978 is about 1594.6110335804.

The spelling of 4054751978 in words is "four billion, fifty-four million, seven hundred fifty-one thousand, nine hundred seventy-eight".