38737121 has 2 divisors, whose sum is σ = 38737122. Its totient is φ = 38737120.

The previous prime is 38737091. The next prime is 38737123. The reversal of 38737121 is 12173783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19936225 + 18800896 = 4465^2 + 4336^2 .

It is a cyclic number.

It is not a de Polignac number, because 38737121 - 2⁶ = 38737057 is a prime.

Together with 38737123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38737123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19368560 + 19368561.

It is an arithmetic number, because the mean of its divisors is an integer number (19368561).

Almost surely, 2^38737121 is an apocalyptic number.

It is an amenable number.

38737121 is a deficient number, since it is larger than the sum of its proper divisors (1).

38737121 is an equidigital number, since it uses as much as digits as its factorization.

38737121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 38737121 is about 6223.9152468523. The cubic root of 38737121 is about 338.3574786546.

The spelling of 38737121 in words is "thirty-eight million, seven hundred thirty-seven thousand, one hundred twenty-one".