38196661 has 4 divisors (see below), whose sum is σ = 38209024. Its totient is φ = 38184300.

The previous prime is 38196607. The next prime is 38196673. The reversal of 38196661 is 16669183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 38196661 - 2⁷ = 38196533 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 (38196601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2956 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (9552256).

Almost surely, 2^38196661 is an apocalyptic number.

It is an amenable number.

38196661 is a deficient number, since it is larger than the sum of its proper divisors (12363).

38196661 is an equidigital number, since it uses as much as digits as its factorization.

38196661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12362.

The product of its digits is 46656, while the sum is 40.

The square root of 38196661 is about 6180.3447314855. The cubic root of 38196661 is about 336.7765162347.

The spelling of 38196661 in words is "thirty-eight million, one hundred ninety-six thousand, six hundred sixty-one".