3649684629 has 4 divisors (see below), whose sum is σ = 4866246176. Its totient is φ = 2433123084.

The previous prime is 3649684613. The next prime is 3649684637. The reversal of 3649684629 is 9264869463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9264869463 = 3 ⋅3088289821.

It is not a de Polignac number, because 3649684629 - 2⁴ = 3649684613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649684609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608280769 + ... + 608280774.

It is an arithmetic number, because the mean of its divisors is an integer number (1216561544).

Almost surely, 2^3649684629 is an apocalyptic number.

It is an amenable number.

3649684629 is a deficient number, since it is larger than the sum of its proper divisors (1216561547).

3649684629 is a wasteful number, since it uses less digits than its factorization.

3649684629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216561546.

The product of its digits is 13436928, while the sum is 57.

The square root of 3649684629 is about 60412.6197826249. The cubic root of 3649684629 is about 1539.6373786395.

The spelling of 3649684629 in words is "three billion, six hundred forty-nine million, six hundred eighty-four thousand, six hundred twenty-nine".