3618364840 has 24 divisors (see below), whose sum is σ = 8142176970. Its totient is φ = 1447193760.

The previous prime is 3618364819. The next prime is 3618364843. The reversal of 3618364840 is 484638163.

It can be written as a sum of positive squares in only one way, i.e., 3256528356 + 361836484 = 57066^2 + 19022^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3618364843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375685 + ... + 385195.

Almost surely, 2^3618364840 is an apocalyptic number.

It is an amenable number.

3618364840 is an abundant number, since it is smaller than the sum of its proper divisors (4523812130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3618364840 is an frugal number, since it uses more digits than its factorization.

3618364840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19033 (or 9518 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 3618364840 is about 60152.8456517229. The cubic root of 3618364840 is about 1535.2205846104.

The spelling of 3618364840 in words is "three billion, six hundred eighteen million, three hundred sixty-four thousand, eight hundred forty".