1938738336 has 48 divisors (see below), whose sum is σ = 5108035968. Its totient is φ = 643852800.

The previous prime is 1938738323. The next prime is 1938738437. The reversal of 1938738336 is 6338378391.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11245 + ... + 63276.

It is an arithmetic number, because the mean of its divisors is an integer number (106417416).

Almost surely, 2^1938738336 is an apocalyptic number.

1938738336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1938738336 is an abundant number, since it is smaller than the sum of its proper divisors (3169297632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938738336 is a wasteful number, since it uses less digits than its factorization.

1938738336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74805 (or 74797 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 51.

The square root of 1938738336 is about 44031.1064589569. The cubic root of 1938738336 is about 1246.9232782533.

The spelling of 1938738336 in words is "one billion, nine hundred thirty-eight million, seven hundred thirty-eight thousand, three hundred thirty-six".