7218514682 has 4 divisors (see below), whose sum is σ = 10827772026. Its totient is φ = 3609257340.

The previous prime is 7218514651. The next prime is 7218514733. The reversal of 7218514682 is 2864158127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2864158127 = 59 ⋅48545053.

It can be written as a sum of positive squares in only one way, i.e., 6717605521 + 500909161 = 81961^2 + 22381^2 .

It is a super-2 number, since 2×7218514682² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804628669 + ... + 1804628672.

Almost surely, 2^7218514682 is an apocalyptic number.

7218514682 is a deficient number, since it is larger than the sum of its proper divisors (3609257344).

7218514682 is a wasteful number, since it uses less digits than its factorization.

7218514682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609257343.

The product of its digits is 215040, while the sum is 44.

The square root of 7218514682 is about 84961.8425059156. The cubic root of 7218514682 is about 1932.6325125817.

The spelling of 7218514682 in words is "seven billion, two hundred eighteen million, five hundred fourteen thousand, six hundred eighty-two".