36818743138 has 4 divisors (see below), whose sum is σ = 55228114710. Its totient is φ = 18409371568.

The previous prime is 36818743097. The next prime is 36818743147. The reversal of 36818743138 is 83134781863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83134781863 = 7 ⋅11876397409.

It can be written as a sum of positive squares in only one way, i.e., 30238775449 + 6579967689 = 173893^2 + 81117^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9204685783 + ... + 9204685786.

Almost surely, 2^36818743138 is an apocalyptic number.

36818743138 is a deficient number, since it is larger than the sum of its proper divisors (18409371572).

36818743138 is a wasteful number, since it uses less digits than its factorization.

36818743138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18409371571.

The product of its digits is 2322432, while the sum is 52.

The spelling of 36818743138 in words is "thirty-six billion, eight hundred eighteen million, seven hundred forty-three thousand, one hundred thirty-eight".