38603381 has 4 divisors (see below), whose sum is σ = 39001452. Its totient is φ = 38205312.

The previous prime is 38603371. The next prime is 38603387. The reversal of 38603381 is 18330683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7344100 + 31259281 = 2710^2 + 5591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38603381 is a prime.

It is a super-2 number, since 2×38603381² = 2980442049262322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38603387) 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, 198890 + ... + 199083.

It is an arithmetic number, because the mean of its divisors is an integer number (9750363).

Almost surely, 2^38603381 is an apocalyptic number.

It is an amenable number.

38603381 is a deficient number, since it is larger than the sum of its proper divisors (398071).

38603381 is an equidigital number, since it uses as much as digits as its factorization.

38603381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398070.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 38603381 is about 6213.1619164480. The cubic root of 38603381 is about 337.9676363397.

The spelling of 38603381 in words is "thirty-eight million, six hundred three thousand, three hundred eighty-one".