7444773138 has 16 divisors (see below), whose sum is σ = 16243141536. Its totient is φ = 2255991840.

The previous prime is 7444773131. The next prime is 7444773157. The reversal of 7444773138 is 8313774447.

It is not an unprimeable number, because it can be changed into a prime (7444773131) 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, 56399731 + ... + 56399862.

It is an arithmetic number, because the mean of its divisors is an integer number (1015196346).

Almost surely, 2^7444773138 is an apocalyptic number.

7444773138 is an abundant number, since it is smaller than the sum of its proper divisors (8798368398).

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

7444773138 is a wasteful number, since it uses less digits than its factorization.

7444773138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112799609.

The product of its digits is 1580544, while the sum is 48.

The square root of 7444773138 is about 86283.0987969255. The cubic root of 7444773138 is about 1952.6174045890.

The spelling of 7444773138 in words is "seven billion, four hundred forty-four million, seven hundred seventy-three thousand, one hundred thirty-eight".