18935354356 has 24 divisors (see below), whose sum is σ = 33491686536. Its totient is φ = 9366451200.

The previous prime is 18935354353. The next prime is 18935354377. The reversal of 18935354356 is 65345353981.

It can be written as a sum of positive squares in 4 ways, for example, as 15039097956 + 3896256400 = 122634^2 + 62420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18935354353) 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, 505920 + ... + 542056.

It is an arithmetic number, because the mean of its divisors is an integer number (1395486939).

Almost surely, 2^18935354356 is an apocalyptic number.

It is an amenable number.

18935354356 is a deficient number, since it is larger than the sum of its proper divisors (14556332180).

18935354356 is a wasteful number, since it uses less digits than its factorization.

18935354356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37539 (or 37537 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 52.

The spelling of 18935354356 in words is "eighteen billion, nine hundred thirty-five million, three hundred fifty-four thousand, three hundred fifty-six".