3644658157 has 8 divisors (see below), whose sum is σ = 4193280000. Its totient is φ = 3103025424.

The previous prime is 3644658077. The next prime is 3644658217. The reversal of 3644658157 is 7518564463.

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 3644658157 - 2¹⁵ = 3644625389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3644658157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644658557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746157 + ... + 1748242.

It is an arithmetic number, because the mean of its divisors is an integer number (524160000).

Almost surely, 2^3644658157 is an apocalyptic number.

It is an amenable number.

3644658157 is a deficient number, since it is larger than the sum of its proper divisors (548621843).

3644658157 is a wasteful number, since it uses less digits than its factorization.

3644658157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494555.

The product of its digits is 2419200, while the sum is 49.

The square root of 3644658157 is about 60371.0042735749. The cubic root of 3644658157 is about 1538.9302399447.

The spelling of 3644658157 in words is "three billion, six hundred forty-four million, six hundred fifty-eight thousand, one hundred fifty-seven".