3613171994 has 4 divisors (see below), whose sum is σ = 5419757994. Its totient is φ = 1806585996.

The previous prime is 3613171979. The next prime is 3613171997. The reversal of 3613171994 is 4991713163.

3613171994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 3606603025 + 6568969 = 60055^2 + 2563^2 .

It is not an unprimeable number, because it can be changed into a prime (3613171997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903292997 + ... + 903293000.

Almost surely, 2^3613171994 is an apocalyptic number.

3613171994 is a deficient number, since it is larger than the sum of its proper divisors (1806586000).

3613171994 is a wasteful number, since it uses less digits than its factorization.

3613171994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806585999.

The product of its digits is 122472, while the sum is 44.

The square root of 3613171994 is about 60109.6663940169. Note that the first 3 decimals coincide. The cubic root of 3613171994 is about 1534.4858161739.

The spelling of 3613171994 in words is "three billion, six hundred thirteen million, one hundred seventy-one thousand, nine hundred ninety-four".