518970157 has 2 divisors, whose sum is σ = 518970158. Its totient is φ = 518970156.

The previous prime is 518970121. The next prime is 518970181. The reversal of 518970157 is 751079815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401160841 + 117809316 = 20029^2 + 10854^2 .

It is a cyclic number.

It is not a de Polignac number, because 518970157 - 2¹⁵ = 518937389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518970107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259485078 + 259485079.

It is an arithmetic number, because the mean of its divisors is an integer number (259485079).

Almost surely, 2^518970157 is an apocalyptic number.

It is an amenable number.

518970157 is a deficient number, since it is larger than the sum of its proper divisors (1).

518970157 is an equidigital number, since it uses as much as digits as its factorization.

518970157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 43.

The square root of 518970157 is about 22780.9165092189. The cubic root of 518970157 is about 803.6139398195.

The spelling of 518970157 in words is "five hundred eighteen million, nine hundred seventy thousand, one hundred fifty-seven".