4781147906 has 4 divisors (see below), whose sum is σ = 7171721862. Its totient is φ = 2390573952.

The previous prime is 4781147873. The next prime is 4781147911. The reversal of 4781147906 is 6097411874.

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., 3777208681 + 1003939225 = 61459^2 + 31685^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195286975 + ... + 1195286978.

Almost surely, 2^4781147906 is an apocalyptic number.

4781147906 is a deficient number, since it is larger than the sum of its proper divisors (2390573956).

4781147906 is a wasteful number, since it uses less digits than its factorization.

4781147906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390573955.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 4781147906 is about 69145.8451824837. The cubic root of 4781147906 is about 1684.6540342284.

The spelling of 4781147906 in words is "four billion, seven hundred eighty-one million, one hundred forty-seven thousand, nine hundred six".