1381334738 has 16 divisors (see below), whose sum is σ = 2370199104. Its totient is φ = 591451440.

The previous prime is 1381334737. The next prime is 1381334753. The reversal of 1381334738 is 8374331831.

It is a junction number, because it is equal to n+sod(n) for n = 1381334695 and 1381334704.

It is not an unprimeable number, because it can be changed into a prime (1381334737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29945 + ... + 60492.

It is an arithmetic number, because the mean of its divisors is an integer number (148137444).

Almost surely, 2^1381334738 is an apocalyptic number.

1381334738 is a deficient number, since it is larger than the sum of its proper divisors (988864366).

1381334738 is a wasteful number, since it uses less digits than its factorization.

1381334738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91537.

The product of its digits is 145152, while the sum is 41.

The square root of 1381334738 is about 37166.3118697565. The cubic root of 1381334738 is about 1113.6951060156.

The spelling of 1381334738 in words is "one billion, three hundred eighty-one million, three hundred thirty-four thousand, seven hundred thirty-eight".