938313738409 has 2 divisors, whose sum is σ = 938313738410. Its totient is φ = 938313738408.

The previous prime is 938313738367. The next prime is 938313738443. The reversal of 938313738409 is 904837313839.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938273136025 + 40602384 = 968645^2 + 6372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938313738409 is a prime.

It is not a weakly prime, because it can be changed into another prime (938313738469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469156869204 + 469156869205.

It is an arithmetic number, because the mean of its divisors is an integer number (469156869205).

Almost surely, 2^938313738409 is an apocalyptic number.

It is an amenable number.

938313738409 is a deficient number, since it is larger than the sum of its proper divisors (1).

938313738409 is an equidigital number, since it uses as much as digits as its factorization.

938313738409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 938313738409 in words is "nine hundred thirty-eight billion, three hundred thirteen million, seven hundred thirty-eight thousand, four hundred nine".