18200920091836 has 12 divisors (see below), whose sum is σ = 31852639541800. Its totient is φ = 9100165937040.

The previous prime is 18200920091833. The next prime is 18200920091869. The reversal of 18200920091836 is 63819002900281.

It is a self number, because there is not a number n which added to its sum of digits gives 18200920091836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18200920091833) 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, 73387950 + ... + 73635541.

Almost surely, 2^{18200920091836} is an apocalyptic number.

It is an amenable number.

18200920091836 is a deficient number, since it is larger than the sum of its proper divisors (13651719449964).

18200920091836 is a wasteful number, since it uses less digits than its factorization.

18200920091836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147054444 (or 147054442 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 18200920091836 in words is "eighteen trillion, two hundred billion, nine hundred twenty million, ninety-one thousand, eight hundred thirty-six".