5157681489 has 27 divisors (see below), whose sum is σ = 7668629787. Its totient is φ = 3340352304.

The previous prime is 5157681457. The next prime is 5157681547. The reversal of 5157681489 is 9841867515.

It is a happy number.

The square root of 5157681489 is 71817.

It is a perfect power (a square), and thus also a powerful number.

5157681489 is a `hidden beast` number, since 5 + 15 + 76 + 81 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4615164225 + 542517264 = 67935^2 + 23292^2 .

It is not a de Polignac number, because 5157681489 - 2⁵ = 5157681457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5157681439) 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 26 ways as a sum of consecutive naturals, for example, 7971364 + ... + 7972010.

Almost surely, 2^5157681489 is an apocalyptic number.

5157681489 is the 71817-th square number.

5157681489 is the 35909-th centered octagonal number.

It is an amenable number.

5157681489 is a deficient number, since it is larger than the sum of its proper divisors (2510948298).

5157681489 is an frugal number, since it uses more digits than its factorization.

5157681489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374 (or 687 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The cubic root of 5157681489 is about 1727.7656665662.

The spelling of 5157681489 in words is "five billion, one hundred fifty-seven million, six hundred eighty-one thousand, four hundred eighty-nine".