18201534733 has 2 divisors, whose sum is σ = 18201534734. Its totient is φ = 18201534732.

The previous prime is 18201534677. The next prime is 18201534737. The reversal of 18201534733 is 33743510281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13750376644 + 4451158089 = 117262^2 + 66717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18201534733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18201534692 and 18201534701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18201534737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100767366 + 9100767367.

It is an arithmetic number, because the mean of its divisors is an integer number (9100767367).

Almost surely, 2^18201534733 is an apocalyptic number.

It is an amenable number.

18201534733 is a deficient number, since it is larger than the sum of its proper divisors (1).

18201534733 is an equidigital number, since it uses as much as digits as its factorization.

18201534733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 18201534733 in words is "eighteen billion, two hundred one million, five hundred thirty-four thousand, seven hundred thirty-three".