36198731 has 4 divisors (see below), whose sum is σ = 37366464. Its totient is φ = 35031000.

The previous prime is 36198727. The next prime is 36198737. The reversal of 36198731 is 13789163.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36198731 - 2² = 36198727 is a prime.

It is a super-2 number, since 2×36198731² = 2620696252020722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36198737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583820 + ... + 583881.

It is an arithmetic number, because the mean of its divisors is an integer number (9341616).

Almost surely, 2^36198731 is an apocalyptic number.

36198731 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

36198731 is a deficient number, since it is larger than the sum of its proper divisors (1167733).

36198731 is a wasteful number, since it uses less digits than its factorization.

36198731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167732.

The product of its digits is 27216, while the sum is 38.

The square root of 36198731 is about 6016.5381242040. The cubic root of 36198731 is about 330.7991985260.

The spelling of 36198731 in words is "thirty-six million, one hundred ninety-eight thousand, seven hundred thirty-one".