478836157 has 4 divisors (see below), whose sum is σ = 504038080. Its totient is φ = 453634236.

The previous prime is 478836131. The next prime is 478836173. The reversal of 478836157 is 751638874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478836157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478836157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478836107) 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 in 3 ways as a sum of consecutive naturals, for example, 12600933 + ... + 12600970.

It is an arithmetic number, because the mean of its divisors is an integer number (126009520).

Almost surely, 2^478836157 is an apocalyptic number.

It is an amenable number.

478836157 is a deficient number, since it is larger than the sum of its proper divisors (25201923).

478836157 is a wasteful number, since it uses less digits than its factorization.

478836157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25201922.

The product of its digits is 1128960, while the sum is 49.

The square root of 478836157 is about 21882.3252192266. The cubic root of 478836157 is about 782.3401978485.

The spelling of 478836157 in words is "four hundred seventy-eight million, eight hundred thirty-six thousand, one hundred fifty-seven".