36811945 has 12 divisors (see below), whose sum is σ = 45040716. Its totient is φ = 28882880.

The previous prime is 36811939. The next prime is 36811963. The reversal of 36811945 is 54911863.

It can be written as a sum of positive squares in 6 ways, for example, as 3956121 + 32855824 = 1989^2 + 5732^2 .

It is not a de Polignac number, because 36811945 - 2⁹ = 36811433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12735 + ... + 15355.

It is an arithmetic number, because the mean of its divisors is an integer number (3753393).

Almost surely, 2^36811945 is an apocalyptic number.

It is an amenable number.

36811945 is a deficient number, since it is larger than the sum of its proper divisors (8228771).

36811945 is an equidigital number, since it uses as much as digits as its factorization.

36811945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2679 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 36811945 is about 6067.2848128302. The cubic root of 36811945 is about 332.6566845911.

The spelling of 36811945 in words is "thirty-six million, eight hundred eleven thousand, nine hundred forty-five".