7198242761 has 4 divisors (see below), whose sum is σ = 7198530000. Its totient is φ = 7197955524.

The previous prime is 7198242721. The next prime is 7198242769. The reversal of 7198242761 is 1672428917.

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: 1672428917 = 317 ⋅5275801.

It is a cyclic number.

It is not a de Polignac number, because 7198242761 - 2²⁶ = 7131133897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7198242769) 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, 102011 + ... + 157488.

It is an arithmetic number, because the mean of its divisors is an integer number (1799632500).

Almost surely, 2^7198242761 is an apocalyptic number.

It is an amenable number.

7198242761 is a deficient number, since it is larger than the sum of its proper divisors (287239).

7198242761 is a wasteful number, since it uses less digits than its factorization.

7198242761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287238.

The product of its digits is 338688, while the sum is 47.

The square root of 7198242761 is about 84842.4584804094. The cubic root of 7198242761 is about 1930.8216642443.

The spelling of 7198242761 in words is "seven billion, one hundred ninety-eight million, two hundred forty-two thousand, seven hundred sixty-one".