7274971961 has 4 divisors (see below), whose sum is σ = 7283268132. Its totient is φ = 7266675792.

The previous prime is 7274971927. The next prime is 7274971969. The reversal of 7274971961 is 1691794727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5935777936 + 1339194025 = 77044^2 + 36595^2 .

It is a cyclic number.

It is not a de Polignac number, because 7274971961 - 2⁶ = 7274971897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7274971969) 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, 4146770 + ... + 4148523.

It is an arithmetic number, because the mean of its divisors is an integer number (1820817033).

Almost surely, 2^7274971961 is an apocalyptic number.

It is an amenable number.

7274971961 is a deficient number, since it is larger than the sum of its proper divisors (8296171).

7274971961 is an equidigital number, since it uses as much as digits as its factorization.

7274971961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8296170.

The product of its digits is 1333584, while the sum is 53.

The square root of 7274971961 is about 85293.4461784726. The cubic root of 7274971961 is about 1937.6579205362.

The spelling of 7274971961 in words is "seven billion, two hundred seventy-four million, nine hundred seventy-one thousand, nine hundred sixty-one".