18670537037 has 4 divisors (see below), whose sum is σ = 18685631676. Its totient is φ = 18655442400.

The previous prime is 18670537001. The next prime is 18670537057. The reversal of 18670537037 is 73073507681.

It is a happy number.

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 5285435401 + 13385101636 = 72701^2 + 115694^2 .

It is a cyclic number.

It is not a de Polignac number, because 18670537037 - 2²² = 18666342733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18670536982 and 18670537000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18670537057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7545464 + ... + 7547937.

It is an arithmetic number, because the mean of its divisors is an integer number (4671407919).

Almost surely, 2^18670537037 is an apocalyptic number.

It is an amenable number.

18670537037 is a deficient number, since it is larger than the sum of its proper divisors (15094639).

18670537037 is a wasteful number, since it uses less digits than its factorization.

18670537037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15094638.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 18670537037 in words is "eighteen billion, six hundred seventy million, five hundred thirty-seven thousand, thirty-seven".