38489908949 has 4 divisors (see below), whose sum is σ = 38538816864. Its totient is φ = 38441001036.

The previous prime is 38489908921. The next prime is 38489908991. The reversal of 38489908949 is 94980998483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38489908949 - 2³² = 34194941653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38489928949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24452777 + ... + 24454350.

It is an arithmetic number, because the mean of its divisors is an integer number (9634704216).

Almost surely, 2^38489908949 is an apocalyptic number.

It is an amenable number.

38489908949 is a deficient number, since it is larger than the sum of its proper divisors (48907915).

38489908949 is an equidigital number, since it uses as much as digits as its factorization.

38489908949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48907914.

The product of its (nonzero) digits is 161243136, while the sum is 71.

The spelling of 38489908949 in words is "thirty-eight billion, four hundred eighty-nine million, nine hundred eight thousand, nine hundred forty-nine".