18313158001 has 4 divisors (see below), whose sum is σ = 18314506404. Its totient is φ = 18311809600.

The previous prime is 18313157987. The next prime is 18313158007. The reversal of 18313158001 is 10085131381.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7382246400 + 10930911601 = 85920^2 + 104551^2 .

It is a cyclic number.

It is not a de Polignac number, because 18313158001 - 2¹³ = 18313149809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18313158007) 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, 653620 + ... + 681061.

It is an arithmetic number, because the mean of its divisors is an integer number (4578626601).

Almost surely, 2^18313158001 is an apocalyptic number.

It is an amenable number.

18313158001 is a deficient number, since it is larger than the sum of its proper divisors (1348403).

18313158001 is a wasteful number, since it uses less digits than its factorization.

18313158001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348402.

The product of its (nonzero) digits is 2880, while the sum is 31.

Adding to 18313158001 its reverse (10085131381), we get a palindrome (28398289382).

The spelling of 18313158001 in words is "eighteen billion, three hundred thirteen million, one hundred fifty-eight thousand, one".