3665769481 has 8 divisors (see below), whose sum is σ = 4014229824. Its totient is φ = 3319843920.

The previous prime is 3665769473. The next prime is 3665769491. The reversal of 3665769481 is 1849675663.

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

It is a cyclic number.

It is not a de Polignac number, because 3665769481 - 2³ = 3665769473 is a prime.

It is a super-2 number, since 2×3665769481² = 26875731775662018722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3665769421) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 630666 + ... + 636451.

It is an arithmetic number, because the mean of its divisors is an integer number (501778728).

Almost surely, 2^3665769481 is an apocalyptic number.

It is an amenable number.

3665769481 is a deficient number, since it is larger than the sum of its proper divisors (348460343).

3665769481 is a wasteful number, since it uses less digits than its factorization.

3665769481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267391.

The product of its digits is 6531840, while the sum is 55.

The square root of 3665769481 is about 60545.5983618958. The cubic root of 3665769481 is about 1541.8958885826.

It can be divided in two parts, 3665 and 769481, that added together give a triangular number (773146 = T₁₂₄₃).

The spelling of 3665769481 in words is "three billion, six hundred sixty-five million, seven hundred sixty-nine thousand, four hundred eighty-one".