3639764434 has 4 divisors (see below), whose sum is σ = 5459646654. Its totient is φ = 1819882216.

The previous prime is 3639764423. The next prime is 3639764449. The reversal of 3639764434 is 4344679363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4344679363 = 18679 ⋅232597.

It can be written as a sum of positive squares in only one way, i.e., 2675475625 + 964288809 = 51725^2 + 31053^2 .

It is a super-2 number, since 2×3639764434² = 26495770270022680712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909941107 + ... + 909941110.

Almost surely, 2^3639764434 is an apocalyptic number.

3639764434 is a deficient number, since it is larger than the sum of its proper divisors (1819882220).

3639764434 is a wasteful number, since it uses less digits than its factorization.

3639764434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819882219.

The product of its digits is 3919104, while the sum is 49.

The square root of 3639764434 is about 60330.4602501920. The cubic root of 3639764434 is about 1538.2411518602.

The spelling of 3639764434 in words is "three billion, six hundred thirty-nine million, seven hundred sixty-four thousand, four hundred thirty-four".