3644468149 has 12 divisors (see below), whose sum is σ = 4302763104. Its totient is φ = 3077202744.

The previous prime is 3644468137. The next prime is 3644468167. The reversal of 3644468149 is 9418644463.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-3644468149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644463149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551769 + ... + 558334.

It is an arithmetic number, because the mean of its divisors is an integer number (358563592).

Almost surely, 2^3644468149 is an apocalyptic number.

It is an amenable number.

3644468149 is a deficient number, since it is larger than the sum of its proper divisors (658294955).

3644468149 is a wasteful number, since it uses less digits than its factorization.

3644468149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110184 (or 1110177 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The square root of 3644468149 is about 60369.4305836986. The cubic root of 3644468149 is about 1538.9034963173.

The spelling of 3644468149 in words is "three billion, six hundred forty-four million, four hundred sixty-eight thousand, one hundred forty-nine".