38920313 has 2 divisors, whose sum is σ = 38920314. Its totient is φ = 38920312.

The previous prime is 38920307. The next prime is 38920339. The reversal of 38920313 is 31302983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22534009 + 16386304 = 4747^2 + 4048^2 .

It is a cyclic number.

It is not a de Polignac number, because 38920313 - 2¹² = 38916217 is a prime.

It is not a weakly prime, because it can be changed into another prime (38920363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19460156 + 19460157.

It is an arithmetic number, because the mean of its divisors is an integer number (19460157).

Almost surely, 2^38920313 is an apocalyptic number.

It is an amenable number.

38920313 is a deficient number, since it is larger than the sum of its proper divisors (1).

38920313 is an equidigital number, since it uses as much as digits as its factorization.

38920313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 38920313 is about 6238.6146699408. The cubic root of 38920313 is about 338.8900163280.

It can be divided in two parts, 389 and 20313, that added together give a palindrome (20702).

The spelling of 38920313 in words is "thirty-eight million, nine hundred twenty thousand, three hundred thirteen".