7638444152 has 8 divisors (see below), whose sum is σ = 14322082800. Its totient is φ = 3819222072.

The previous prime is 7638444109. The next prime is 7638444157. The reversal of 7638444152 is 2514448367.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×7638444152³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638444157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477402752 + ... + 477402767.

It is an arithmetic number, because the mean of its divisors is an integer number (1790260350).

Almost surely, 2^7638444152 is an apocalyptic number.

It is an amenable number.

7638444152 is a deficient number, since it is larger than the sum of its proper divisors (6683638648).

7638444152 is a wasteful number, since it uses less digits than its factorization.

7638444152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954805525 (or 954805521 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The square root of 7638444152 is about 87398.1930705664. The cubic root of 7638444152 is about 1969.4046963150.

The spelling of 7638444152 in words is "seven billion, six hundred thirty-eight million, four hundred forty-four thousand, one hundred fifty-two".