18149700053 has 4 divisors (see below), whose sum is σ = 18254611788. Its totient is φ = 18044788320.

The previous prime is 18149700031. The next prime is 18149700059. The reversal of 18149700053 is 35000794181.

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 16920286084 + 1229413969 = 130078^2 + 35063^2 .

It is a cyclic number.

It is not a de Polignac number, because 18149700053 - 2¹² = 18149695957 is a prime.

It is a super-2 number, since 2×18149700053² (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 (18149700059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52455608 + ... + 52455953.

It is an arithmetic number, because the mean of its divisors is an integer number (4563652947).

Almost surely, 2^18149700053 is an apocalyptic number.

It is an amenable number.

18149700053 is a deficient number, since it is larger than the sum of its proper divisors (104911735).

18149700053 is a wasteful number, since it uses less digits than its factorization.

18149700053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104911734.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 18149700053 in words is "eighteen billion, one hundred forty-nine million, seven hundred thousand, fifty-three".