7838641523 has 8 divisors (see below), whose sum is σ = 8291501088. Its totient is φ = 7395119424.

The previous prime is 7838641487. The next prime is 7838641561. The reversal of 7838641523 is 3251468387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7838641523 - 2¹² = 7838637427 is a prime.

It is a super-2 number, since 2×7838641523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7838643523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2332640 + ... + 2335997.

It is an arithmetic number, because the mean of its divisors is an integer number (1036437636).

Almost surely, 2^7838641523 is an apocalyptic number.

7838641523 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

7838641523 is a deficient number, since it is larger than the sum of its proper divisors (452859565).

7838641523 is a wasteful number, since it uses less digits than its factorization.

7838641523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668733.

The product of its digits is 967680, while the sum is 47.

The square root of 7838641523 is about 88536.1029354692. The cubic root of 7838641523 is about 1986.4620286825.

The spelling of 7838641523 in words is "seven billion, eight hundred thirty-eight million, six hundred forty-one thousand, five hundred twenty-three".