7489719866 has 4 divisors (see below), whose sum is σ = 11234579802. Its totient is φ = 3744859932.

The previous prime is 7489719851. The next prime is 7489719901. The reversal of 7489719866 is 6689179847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6689179847 = 7 ⋅955597121.

It can be written as a sum of positive squares in only one way, i.e., 5939014225 + 1550705641 = 77065^2 + 39379^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1872429965 + ... + 1872429968.

Almost surely, 2^7489719866 is an apocalyptic number.

7489719866 is a deficient number, since it is larger than the sum of its proper divisors (3744859936).

7489719866 is a wasteful number, since it uses less digits than its factorization.

7489719866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744859935.

The product of its digits is 36578304, while the sum is 65.

The square root of 7489719866 is about 86543.1676448234. The cubic root of 7489719866 is about 1956.5390702320.

The spelling of 7489719866 in words is "seven billion, four hundred eighty-nine million, seven hundred nineteen thousand, eight hundred sixty-six".