38497918 has 4 divisors (see below), whose sum is σ = 57746880. Its totient is φ = 19248958.

The previous prime is 38497909. The next prime is 38497919. The reversal of 38497918 is 81979483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81979483 = 223 ⋅367621.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38497919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9624478 + ... + 9624481.

It is an arithmetic number, because the mean of its divisors is an integer number (14436720).

Almost surely, 2^38497918 is an apocalyptic number.

38497918 is a deficient number, since it is larger than the sum of its proper divisors (19248962).

38497918 is a wasteful number, since it uses less digits than its factorization.

38497918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19248961.

The product of its digits is 435456, while the sum is 49.

The square root of 38497918 is about 6204.6690483861. The cubic root of 38497918 is about 337.6595839724.

The spelling of 38497918 in words is "thirty-eight million, four hundred ninety-seven thousand, nine hundred eighteen".