4778378402 has 8 divisors (see below), whose sum is σ = 8191505856. Its totient is φ = 2047876452.

The previous prime is 4778378393. The next prime is 4778378413. The reversal of 4778378402 is 2048738774.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 170656358 + ... + 170656385.

It is an arithmetic number, because the mean of its divisors is an integer number (1023938232).

Almost surely, 2^4778378402 is an apocalyptic number.

4778378402 is a deficient number, since it is larger than the sum of its proper divisors (3413127454).

4778378402 is a wasteful number, since it uses less digits than its factorization.

4778378402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341312752.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The square root of 4778378402 is about 69125.8157420222. The cubic root of 4778378402 is about 1684.3286899571.

The spelling of 4778378402 in words is "four billion, seven hundred seventy-eight million, three hundred seventy-eight thousand, four hundred two".