18182715701 has 4 divisors (see below), whose sum is σ = 18304747500. Its totient is φ = 18060683904.

The previous prime is 18182715667. The next prime is 18182715737. The reversal of 18182715701 is 10751728181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10751728181 = 113 ⋅95148037.

It can be written as a sum of positive squares in 2 ways, for example, as 4616523025 + 13566192676 = 67945^2 + 116474^2 .

It is a cyclic number.

It is not a de Polignac number, because 18182715701 - 2¹⁴ = 18182699317 is a prime.

It is a super-2 number, since 2×18182715701² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182715751) 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, 61015676 + ... + 61015973.

It is an arithmetic number, because the mean of its divisors is an integer number (4576186875).

Almost surely, 2^18182715701 is an apocalyptic number.

It is an amenable number.

18182715701 is a deficient number, since it is larger than the sum of its proper divisors (122031799).

18182715701 is a wasteful number, since it uses less digits than its factorization.

18182715701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122031798.

The product of its (nonzero) digits is 31360, while the sum is 41.

The spelling of 18182715701 in words is "eighteen billion, one hundred eighty-two million, seven hundred fifteen thousand, seven hundred one".