7291887945 has 16 divisors (see below), whose sum is σ = 12353316480. Its totient is φ = 3660241664.

The previous prime is 7291887929. The next prime is 7291887959. The reversal of 7291887945 is 5497881927.

It is a cyclic number.

It is not a de Polignac number, because 7291887945 - 2⁴ = 7291887929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14297565 + ... + 14298074.

It is an arithmetic number, because the mean of its divisors is an integer number (772082280).

Almost surely, 2^7291887945 is an apocalyptic number.

It is an amenable number.

7291887945 is a deficient number, since it is larger than the sum of its proper divisors (5061428535).

7291887945 is a wasteful number, since it uses less digits than its factorization.

7291887945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28595664.

The product of its digits is 10160640, while the sum is 60.

The square root of 7291887945 is about 85392.5520464168. The cubic root of 7291887945 is about 1939.1585915277.

The spelling of 7291887945 in words is "seven billion, two hundred ninety-one million, eight hundred eighty-seven thousand, nine hundred forty-five".