8144738515 has 8 divisors (see below), whose sum is σ = 9774841680. Its totient is φ = 6515020512.

The previous prime is 8144738513. The next prime is 8144738527. The reversal of 8144738515 is 5158374418.

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 8144738515 - 2¹ = 8144738513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8144738513) 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, 47520 + ... + 136189.

It is an arithmetic number, because the mean of its divisors is an integer number (1221855210).

Almost surely, 2^8144738515 is an apocalyptic number.

8144738515 is a deficient number, since it is larger than the sum of its proper divisors (1630103165).

8144738515 is a wasteful number, since it uses less digits than its factorization.

8144738515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192581.

The product of its digits is 537600, while the sum is 46.

The square root of 8144738515 is about 90248.2050514025. The cubic root of 8144738515 is about 2011.9895249393.

It can be divided in two parts, 814 and 4738515, that added together give a square (4739329 = 2177²).

The spelling of 8144738515 in words is "eight billion, one hundred forty-four million, seven hundred thirty-eight thousand, five hundred fifteen".