18073737485 has 8 divisors (see below), whose sum is σ = 21985587960. Its totient is φ = 14260921344.

The previous prime is 18073737481. The next prime is 18073737499. The reversal of 18073737485 is 58473737081.

It can be written as a sum of positive squares in 4 ways, for example, as 7329585769 + 10744151716 = 85613^2 + 103654^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18073737485 - 2² = 18073737481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073737481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24758180 + ... + 24758909.

It is an arithmetic number, because the mean of its divisors is an integer number (2748198495).

Almost surely, 2^18073737485 is an apocalyptic number.

It is an amenable number.

18073737485 is a deficient number, since it is larger than the sum of its proper divisors (3911850475).

18073737485 is an equidigital number, since it uses as much as digits as its factorization.

18073737485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49517167.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 18073737485 in words is "eighteen billion, seventy-three million, seven hundred thirty-seven thousand, four hundred eighty-five".