3649319739 has 24 divisors (see below), whose sum is σ = 6010647552. Its totient is φ = 2113632000.

The previous prime is 3649319711. The next prime is 3649319749. The reversal of 3649319739 is 9379139463.

3649319739 is a `hidden beast` number, since 36 + 493 + 1 + 97 + 39 = 666.

3649319739 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3649319739 - 2¹² = 3649315643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3649319749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 915387 + ... + 919364.

It is an arithmetic number, because the mean of its divisors is an integer number (250443648).

Almost surely, 2^3649319739 is an apocalyptic number.

3649319739 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3649319739 is a deficient number, since it is larger than the sum of its proper divisors (2361327813).

3649319739 is a wasteful number, since it uses less digits than its factorization.

3649319739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834787 (or 1834784 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 54.

The square root of 3649319739 is about 60409.5997255403. The cubic root of 3649319739 is about 1539.5860667168.

The spelling of 3649319739 in words is "three billion, six hundred forty-nine million, three hundred nineteen thousand, seven hundred thirty-nine".