38774381 has 2 divisors, whose sum is σ = 38774382. Its totient is φ = 38774380.

The previous prime is 38774369. The next prime is 38774431. The reversal of 38774381 is 18347783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 2353156 = 6035^2 + 1534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38774381 is a prime.

It is a super-2 number, since 2×38774381² = 3006905243866322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38774311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19387190 + 19387191.

It is an arithmetic number, because the mean of its divisors is an integer number (19387191).

Almost surely, 2^38774381 is an apocalyptic number.

It is an amenable number.

38774381 is a deficient number, since it is larger than the sum of its proper divisors (1).

38774381 is an equidigital number, since it uses as much as digits as its factorization.

38774381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 38774381 is about 6226.9078200982. The cubic root of 38774381 is about 338.4659289759.

The spelling of 38774381 in words is "thirty-eight million, seven hundred seventy-four thousand, three hundred eighty-one".