38181007 has 2 divisors, whose sum is σ = 38181008. Its totient is φ = 38181006.

The previous prime is 38181001. The next prime is 38181019. The reversal of 38181007 is 70018183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38181007 - 2³ = 38180999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38181001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19090503 + 19090504.

It is an arithmetic number, because the mean of its divisors is an integer number (19090504).

Almost surely, 2^38181007 is an apocalyptic number.

38181007 is a deficient number, since it is larger than the sum of its proper divisors (1).

38181007 is an equidigital number, since it uses as much as digits as its factorization.

38181007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 38181007 is about 6179.0781674939. The cubic root of 38181007 is about 336.7305033128.

The spelling of 38181007 in words is "thirty-eight million, one hundred eighty-one thousand, seven".