7131166738 has 4 divisors (see below), whose sum is σ = 10696750110. Its totient is φ = 3565583368.

The previous prime is 7131166733. The next prime is 7131166759. The reversal of 7131166738 is 8376611317.

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

It can be written as a sum of positive squares in only one way, i.e., 5040574009 + 2090592729 = 70997^2 + 45723^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7131166694 and 7131166703.

It is not an unprimeable number, because it can be changed into a prime (7131166733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782791683 + ... + 1782791686.

Almost surely, 2^7131166738 is an apocalyptic number.

7131166738 is a deficient number, since it is larger than the sum of its proper divisors (3565583372).

7131166738 is a wasteful number, since it uses less digits than its factorization.

7131166738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565583371.

The product of its digits is 127008, while the sum is 43.

The square root of 7131166738 is about 84446.2357834853. The cubic root of 7131166738 is about 1924.8055563874.

The spelling of 7131166738 in words is "seven billion, one hundred thirty-one million, one hundred sixty-six thousand, seven hundred thirty-eight".