5218161742 has 4 divisors (see below), whose sum is σ = 7827242616. Its totient is φ = 2609080870.

The previous prime is 5218161629. The next prime is 5218161749. The reversal of 5218161742 is 2471618125.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218161749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304540434 + ... + 1304540437.

It is an arithmetic number, because the mean of its divisors is an integer number (1956810654).

Almost surely, 2^5218161742 is an apocalyptic number.

5218161742 is a deficient number, since it is larger than the sum of its proper divisors (2609080874).

5218161742 is a wasteful number, since it uses less digits than its factorization.

5218161742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609080873.

The product of its digits is 26880, while the sum is 37.

The square root of 5218161742 is about 72236.8447677499. The cubic root of 5218161742 is about 1734.4928428230.

Adding to 5218161742 its reverse (2471618125), we get a palindrome (7689779867).

The spelling of 5218161742 in words is "five billion, two hundred eighteen million, one hundred sixty-one thousand, seven hundred forty-two".