2571967993 has 8 divisors (see below), whose sum is σ = 2960848512. Its totient is φ = 2188451616.

The previous prime is 2571967973. The next prime is 2571967997. The reversal of 2571967993 is 3997691752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2571967993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2571967997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340005 + ... + 1341922.

It is an arithmetic number, because the mean of its divisors is an integer number (370106064).

Almost surely, 2^2571967993 is an apocalyptic number.

It is an amenable number.

2571967993 is a deficient number, since it is larger than the sum of its proper divisors (388880519).

2571967993 is a wasteful number, since it uses less digits than its factorization.

2571967993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682071.

The product of its digits is 6429780, while the sum is 58.

The square root of 2571967993 is about 50714.5737732262. The cubic root of 2571967993 is about 1370.1092127048.

The spelling of 2571967993 in words is "two billion, five hundred seventy-one million, nine hundred sixty-seven thousand, nine hundred ninety-three".