7838392144 has 40 divisors (see below), whose sum is σ = 16638702912. Its totient is φ = 3547595520.

The previous prime is 7838392141. The next prime is 7838392151. The reversal of 7838392144 is 4412938387.

It is a happy number.

It is a super-2 number, since 2×7838392144² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7838392141) 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, 54564 + ... + 136579.

Almost surely, 2^7838392144 is an apocalyptic number.

It is an amenable number.

7838392144 is an abundant number, since it is smaller than the sum of its proper divisors (8800310768).

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

7838392144 is a wasteful number, since it uses less digits than its factorization.

7838392144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191395 (or 191389 counting only the distinct ones).

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

The square root of 7838392144 is about 88534.6945778885. The cubic root of 7838392144 is about 1986.4409626527.

The spelling of 7838392144 in words is "seven billion, eight hundred thirty-eight million, three hundred ninety-two thousand, one hundred forty-four".