38661793 has 4 divisors (see below), whose sum is σ = 38778928. Its totient is φ = 38544660.

The previous prime is 38661769. The next prime is 38661797. The reversal of 38661793 is 39716683.

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 an emirpimes, since its reverse is a distinct semiprime: 39716683 = 5821 ⋅6823.

It is a cyclic number.

It is not a de Polignac number, because 38661793 - 2⁵ = 38661761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38661797) 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, 58071 + ... + 58732.

It is an arithmetic number, because the mean of its divisors is an integer number (9694732).

Almost surely, 2^38661793 is an apocalyptic number.

It is an amenable number.

38661793 is a deficient number, since it is larger than the sum of its proper divisors (117135).

38661793 is a wasteful number, since it uses less digits than its factorization.

38661793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117134.

The product of its digits is 163296, while the sum is 43.

The square root of 38661793 is about 6217.8608057756. The cubic root of 38661793 is about 338.1380136169.

The spelling of 38661793 in words is "thirty-eight million, six hundred sixty-one thousand, seven hundred ninety-three".