36131978 has 8 divisors (see below), whose sum is σ = 54303168. Its totient is φ = 18030924.

The previous prime is 36131951. The next prime is 36131983. The reversal of 36131978 is 87913163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 16226 + ... + 18317.

It is an arithmetic number, because the mean of its divisors is an integer number (6787896).

Almost surely, 2^36131978 is an apocalyptic number.

36131978 is a deficient number, since it is larger than the sum of its proper divisors (18171190).

36131978 is a wasteful number, since it uses less digits than its factorization.

36131978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35068.

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

The square root of 36131978 is about 6010.9881051288. The cubic root of 36131978 is about 330.5957344293.

The spelling of 36131978 in words is "thirty-six million, one hundred thirty-one thousand, nine hundred seventy-eight".