38242720949 has 16 divisors (see below), whose sum is σ = 39564288000. Its totient is φ = 36949160304.

The previous prime is 38242720933. The next prime is 38242720973. The reversal of 38242720949 is 94902724283.

It is a cyclic number.

It is not a de Polignac number, because 38242720949 - 2⁴ = 38242720933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38242720897 and 38242720906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38242720249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 777902 + ... + 825600.

It is an arithmetic number, because the mean of its divisors is an integer number (2472768000).

Almost surely, 2^38242720949 is an apocalyptic number.

It is an amenable number.

38242720949 is a deficient number, since it is larger than the sum of its proper divisors (1321567051).

38242720949 is a wasteful number, since it uses less digits than its factorization.

38242720949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47992.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 38242720949 in words is "thirty-eight billion, two hundred forty-two million, seven hundred twenty thousand, nine hundred forty-nine".