5178440437 has 2 divisors, whose sum is σ = 5178440438. Its totient is φ = 5178440436.

The previous prime is 5178440417. The next prime is 5178440447. The reversal of 5178440437 is 7340448715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2769495876 + 2408944561 = 52626^2 + 49081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5178440437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5178440393 and 5178440402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5178440417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589220218 + 2589220219.

It is an arithmetic number, because the mean of its divisors is an integer number (2589220219).

Almost surely, 2^5178440437 is an apocalyptic number.

It is an amenable number.

5178440437 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178440437 is an equidigital number, since it uses as much as digits as its factorization.

5178440437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 43.

The square root of 5178440437 is about 71961.3815667821. The cubic root of 5178440437 is about 1730.0805688250.

The spelling of 5178440437 in words is "five billion, one hundred seventy-eight million, four hundred forty thousand, four hundred thirty-seven".