38274991 has 2 divisors, whose sum is σ = 38274992. Its totient is φ = 38274990.

The previous prime is 38274989. The next prime is 38274997. The reversal of 38274991 is 19947283.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38274991 - 2¹ = 38274989 is a prime.

Together with 38274989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38274997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19137495 + 19137496.

It is an arithmetic number, because the mean of its divisors is an integer number (19137496).

Almost surely, 2^38274991 is an apocalyptic number.

38274991 is a deficient number, since it is larger than the sum of its proper divisors (1).

38274991 is an equidigital number, since it uses as much as digits as its factorization.

38274991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 38274991 is about 6186.6785111237. The cubic root of 38274991 is about 337.0065685659.

The spelling of 38274991 in words is "thirty-eight million, two hundred seventy-four thousand, nine hundred ninety-one".