36391938 has 32 divisors (see below), whose sum is σ = 79633152. Its totient is φ = 10995600.

The previous prime is 36391937. The next prime is 36391961. The reversal of 36391938 is 83919363.

It is a self number, because there is not a number n which added to its sum of digits gives 36391938.

It is not an unprimeable number, because it can be changed into a prime (36391937) 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, 31845 + ... + 32967.

It is an arithmetic number, because the mean of its divisors is an integer number (2488536).

Almost surely, 2^36391938 is an apocalyptic number.

36391938 is an abundant number, since it is smaller than the sum of its proper divisors (43241214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36391938 is a wasteful number, since it uses less digits than its factorization.

36391938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630.

The product of its digits is 104976, while the sum is 42.

The square root of 36391938 is about 6032.5730828561. The cubic root of 36391938 is about 331.3866900924.

The spelling of 36391938 in words is "thirty-six million, three hundred ninety-one thousand, nine hundred thirty-eight".