3618351921 has 8 divisors (see below), whose sum is σ = 4829235840. Its totient is φ = 2409851312.

The previous prime is 3618351853. The next prime is 3618351929. The reversal of 3618351921 is 1291538163.

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 3618351921 - 2⁹ = 3618351409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3618351921.

It is not an unprimeable number, because it can be changed into a prime (3618351929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592281 + ... + 598358.

It is an arithmetic number, because the mean of its divisors is an integer number (603654480).

Almost surely, 2^3618351921 is an apocalyptic number.

It is an amenable number.

3618351921 is a deficient number, since it is larger than the sum of its proper divisors (1210883919).

3618351921 is a wasteful number, since it uses less digits than its factorization.

3618351921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191655.

The product of its digits is 38880, while the sum is 39.

The square root of 3618351921 is about 60152.7382668487. The cubic root of 3618351921 is about 1535.2187574925.

The spelling of 3618351921 in words is "three billion, six hundred eighteen million, three hundred fifty-one thousand, nine hundred twenty-one".