38018957 has 4 divisors (see below), whose sum is σ = 38031420. Its totient is φ = 38006496.

The previous prime is 38018917. The next prime is 38018969. The reversal of 38018957 is 75981083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75981083 = 271 ⋅280373.

It can be written as a sum of positive squares in 2 ways, for example, as 33477796 + 4541161 = 5786^2 + 2131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38018957 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 (38018917) 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, 1769 + ... + 8897.

It is an arithmetic number, because the mean of its divisors is an integer number (9507855).

Almost surely, 2^38018957 is an apocalyptic number.

It is an amenable number.

38018957 is a deficient number, since it is larger than the sum of its proper divisors (12463).

38018957 is an equidigital number, since it uses as much as digits as its factorization.

38018957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12462.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 38018957 is about 6165.9514269900. The cubic root of 38018957 is about 336.2534374980.

The spelling of 38018957 in words is "thirty-eight million, eighteen thousand, nine hundred fifty-seven".