5214139681 has 9 divisors (see below), whose sum is σ = 5258193969. Its totient is φ = 5170453236.

The previous prime is 5214139673. The next prime is 5214139739. The reversal of 5214139681 is 1869314125.

The square root of 5214139681 is 72209.

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

It is not a de Polignac number, because 5214139681 - 2³ = 5214139673 is a prime.

It is a super-2 number, since 2×5214139681² = 54374505225957563522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5214139621) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11769846 + ... + 11770288.

Almost surely, 2^5214139681 is an apocalyptic number.

5214139681 is the 72209-th square number.

5214139681 is the 36105-th centered octagonal number.

It is an amenable number.

5214139681 is a deficient number, since it is larger than the sum of its proper divisors (44054288).

5214139681 is an frugal number, since it uses more digits than its factorization.

5214139681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 606 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The cubic root of 5214139681 is about 1734.0470901158.

The spelling of 5214139681 in words is "five billion, two hundred fourteen million, one hundred thirty-nine thousand, six hundred eighty-one".