36194073981 has 16 divisors (see below), whose sum is σ = 52125213504. Its totient is φ = 22207175424.

The previous prime is 36194073917. The next prime is 36194073983. The reversal of 36194073981 is 18937049163.

It is not a de Polignac number, because 36194073981 - 2⁶ = 36194073917 is a prime.

It is a super-2 number, since 2×36194073981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36194073983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363791 + ... + 1390076.

It is an arithmetic number, because the mean of its divisors is an integer number (3257825844).

Almost surely, 2^36194073981 is an apocalyptic number.

It is an amenable number.

36194073981 is a deficient number, since it is larger than the sum of its proper divisors (15931139523).

36194073981 is a wasteful number, since it uses less digits than its factorization.

36194073981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754220.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 36194073981 in words is "thirty-six billion, one hundred ninety-four million, seventy-three thousand, nine hundred eighty-one".