4478740157 has 2 divisors, whose sum is σ = 4478740158. Its totient is φ = 4478740156.

The previous prime is 4478740111. The next prime is 4478740169. The reversal of 4478740157 is 7510478744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2512615876 + 1966124281 = 50126^2 + 44341^2 .

It is a cyclic number.

It is not a de Polignac number, because 4478740157 - 2¹² = 4478736061 is a prime.

It is a super-2 number, since 2×4478740157² = 40118226787848769298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4478740177) by changing a digit.

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 as a sum of consecutive naturals, namely, 2239370078 + 2239370079.

It is an arithmetic number, because the mean of its divisors is an integer number (2239370079).

Almost surely, 2^4478740157 is an apocalyptic number.

It is an amenable number.

4478740157 is a deficient number, since it is larger than the sum of its proper divisors (1).

4478740157 is an equidigital number, since it uses as much as digits as its factorization.

4478740157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 878080, while the sum is 47.

The square root of 4478740157 is about 66923.3902085063. The cubic root of 4478740157 is about 1648.3595764943.

The spelling of 4478740157 in words is "four billion, four hundred seventy-eight million, seven hundred forty thousand, one hundred fifty-seven".