38019913 has 4 divisors (see below), whose sum is σ = 38253328. Its totient is φ = 37786500.

The previous prime is 38019911. The next prime is 38019923. The reversal of 38019913 is 31991083.

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: 31991083 = 3881 ⋅8243.

It is a cyclic number.

It is not a de Polignac number, because 38019913 - 2¹ = 38019911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38019911) 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, 116463 + ... + 116788.

It is an arithmetic number, because the mean of its divisors is an integer number (9563332).

Almost surely, 2^38019913 is an apocalyptic number.

It is an amenable number.

38019913 is a deficient number, since it is larger than the sum of its proper divisors (233415).

38019913 is a wasteful number, since it uses less digits than its factorization.

38019913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233414.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 38019913 is about 6166.0289490076. The cubic root of 38019913 is about 336.2562558779.

The spelling of 38019913 in words is "thirty-eight million, nineteen thousand, nine hundred thirteen".