3669261639 has 8 divisors (see below), whose sum is σ = 4898311152. Its totient is φ = 2443193280.

The previous prime is 3669261613. The next prime is 3669261643. The reversal of 3669261639 is 9361629663.

It is a happy number.

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

It is not a de Polignac number, because 3669261639 - 2¹⁶ = 3669196103 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3669261591 and 3669261600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3669261689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742414 + ... + 747339.

It is an arithmetic number, because the mean of its divisors is an integer number (612288894).

Almost surely, 2^3669261639 is an apocalyptic number.

3669261639 is a deficient number, since it is larger than the sum of its proper divisors (1229049513).

3669261639 is a wasteful number, since it uses less digits than its factorization.

3669261639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490577.

The product of its digits is 1889568, while the sum is 51.

The square root of 3669261639 is about 60574.4305709926. The cubic root of 3669261639 is about 1542.3853569967.

The spelling of 3669261639 in words is "three billion, six hundred sixty-nine million, two hundred sixty-one thousand, six hundred thirty-nine".