5171661738 has 24 divisors (see below), whose sum is σ = 11566728576. Its totient is φ = 1668277800.

The previous prime is 5171661673. The next prime is 5171661739. The reversal of 5171661738 is 8371661715.

5171661738 is a `hidden beast` number, since 5 + 17 + 16 + 617 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5171661693 and 5171661702.

It is not an unprimeable number, because it can be changed into a prime (5171661739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4633548 + ... + 4634663.

It is an arithmetic number, because the mean of its divisors is an integer number (481947024).

Almost surely, 2^5171661738 is an apocalyptic number.

5171661738 is an abundant number, since it is smaller than the sum of its proper divisors (6395066838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5171661738 is a wasteful number, since it uses less digits than its factorization.

5171661738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268250 (or 9268247 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 5171661738 is about 71914.2665818125. The cubic root of 5171661738 is about 1729.3253339518.

The spelling of 5171661738 in words is "five billion, one hundred seventy-one million, six hundred sixty-one thousand, seven hundred thirty-eight".