7219792081 has 4 divisors (see below), whose sum is σ = 7232616432. Its totient is φ = 7206967732.

The previous prime is 7219792061. The next prime is 7219792087. The reversal of 7219792081 is 1802979127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1802979127 = 31 ⋅58160617.

It is a cyclic number.

It is not a de Polignac number, because 7219792081 - 2⁹ = 7219791569 is a prime.

It is a super-2 number, since 2×7219792081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7219792087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411331 + ... + 6412456.

It is an arithmetic number, because the mean of its divisors is an integer number (1808154108).

Almost surely, 2^7219792081 is an apocalyptic number.

It is an amenable number.

7219792081 is a deficient number, since it is larger than the sum of its proper divisors (12824351).

7219792081 is a wasteful number, since it uses less digits than its factorization.

7219792081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824350.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 7219792081 is about 84969.3596598209. The cubic root of 7219792081 is about 1932.7465063574.

The spelling of 7219792081 in words is "seven billion, two hundred nineteen million, seven hundred ninety-two thousand, eighty-one".