318148532437 has 4 divisors (see below), whose sum is σ = 319925898720. Its totient is φ = 316371166156.

The previous prime is 318148532407. The next prime is 318148532473. The reversal of 318148532437 is 734235841813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734235841813 = 80231 ⋅9151523.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318148532437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318148532407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888682873 + ... + 888683230.

It is an arithmetic number, because the mean of its divisors is an integer number (79981474680).

Almost surely, 2^318148532437 is an apocalyptic number.

It is an amenable number.

318148532437 is a deficient number, since it is larger than the sum of its proper divisors (1777366283).

318148532437 is a wasteful number, since it uses less digits than its factorization.

318148532437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777366282.

The product of its digits is 1935360, while the sum is 49.

The spelling of 318148532437 in words is "three hundred eighteen billion, one hundred forty-eight million, five hundred thirty-two thousand, four hundred thirty-seven".