3666398493 has 8 divisors (see below), whose sum is σ = 4898571328. Its totient is φ = 2439245664.

The previous prime is 3666398459. The next prime is 3666398507. The reversal of 3666398493 is 3948936663.

3666398493 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3666398493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666398443) 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, 1253296 + ... + 1256217.

It is an arithmetic number, because the mean of its divisors is an integer number (612321416).

Almost surely, 2^3666398493 is an apocalyptic number.

It is an amenable number.

3666398493 is a deficient number, since it is larger than the sum of its proper divisors (1232172835).

3666398493 is a wasteful number, since it uses less digits than its factorization.

3666398493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510003.

The product of its digits is 15116544, while the sum is 57.

The square root of 3666398493 is about 60550.7926702863. The cubic root of 3666398493 is about 1541.9840752106.

The spelling of 3666398493 in words is "three billion, six hundred sixty-six million, three hundred ninety-eight thousand, four hundred ninety-three".