38349388949 has 2 divisors, whose sum is σ = 38349388950. Its totient is φ = 38349388948.

The previous prime is 38349388877. The next prime is 38349388963. The reversal of 38349388949 is 94988394383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38349388900 + 49 = 195830^2 + 7^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38349388949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38349388849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19174694474 + 19174694475.

It is an arithmetic number, because the mean of its divisors is an integer number (19174694475).

Almost surely, 2^38349388949 is an apocalyptic number.

It is an amenable number.

38349388949 is a deficient number, since it is larger than the sum of its proper divisors (1).

38349388949 is an equidigital number, since it uses as much as digits as its factorization.

38349388949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161243136, while the sum is 68.

It can be divided in two parts, 383493889 and 49, that multiplied together give a square (18791200561 = 137081²).

The spelling of 38349388949 in words is "thirty-eight billion, three hundred forty-nine million, three hundred eighty-eight thousand, nine hundred forty-nine".