38113709 has 2 divisors, whose sum is σ = 38113710. Its totient is φ = 38113708.

The previous prime is 38113693. The next prime is 38113717. The reversal of 38113709 is 90731183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31753225 + 6360484 = 5635^2 + 2522^2 .

It is an emirp because it is prime and its reverse (90731183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38113709 - 2⁴ = 38113693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38113739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19056854 + 19056855.

It is an arithmetic number, because the mean of its divisors is an integer number (19056855).

Almost surely, 2^38113709 is an apocalyptic number.

It is an amenable number.

38113709 is a deficient number, since it is larger than the sum of its proper divisors (1).

38113709 is an equidigital number, since it uses as much as digits as its factorization.

38113709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 38113709 is about 6173.6301314543. The cubic root of 38113709 is about 336.5325461037.

The spelling of 38113709 in words is "thirty-eight million, one hundred thirteen thousand, seven hundred nine".