1238744938 has 16 divisors (see below), whose sum is σ = 1992820320. Its totient is φ = 575701776.

The previous prime is 1238744917. The next prime is 1238744939. The reversal of 1238744938 is 8394478321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1238744891 and 1238744900.

It is not an unprimeable number, because it can be changed into a prime (1238744939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305520 + ... + 309547.

It is an arithmetic number, because the mean of its divisors is an integer number (124551270).

Almost surely, 2^1238744938 is an apocalyptic number.

1238744938 is a deficient number, since it is larger than the sum of its proper divisors (754075382).

1238744938 is a wasteful number, since it uses less digits than its factorization.

1238744938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615141.

The product of its digits is 1161216, while the sum is 49.

The square root of 1238744938 is about 35195.8085288575. The cubic root of 1238744938 is about 1073.9744863649.

The spelling of 1238744938 in words is "one billion, two hundred thirty-eight million, seven hundred forty-four thousand, nine hundred thirty-eight".