4791378155 has 4 divisors (see below), whose sum is σ = 5749653792. Its totient is φ = 3833102520.

The previous prime is 4791378127. The next prime is 4791378191. The reversal of 4791378155 is 5518731974.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4791378155 - 2⁶ = 4791378091 is a prime.

It is a super-2 number, since 2×4791378155² = 45914609248422408050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479137811 + ... + 479137820.

It is an arithmetic number, because the mean of its divisors is an integer number (1437413448).

Almost surely, 2^4791378155 is an apocalyptic number.

4791378155 is a deficient number, since it is larger than the sum of its proper divisors (958275637).

4791378155 is an equidigital number, since it uses as much as digits as its factorization.

4791378155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958275636.

The product of its digits is 1058400, while the sum is 50.

The square root of 4791378155 is about 69219.7815295599. The cubic root of 4791378155 is about 1685.8547328177.

The spelling of 4791378155 in words is "four billion, seven hundred ninety-one million, three hundred seventy-eight thousand, one hundred fifty-five".