2543497916 has 12 divisors (see below), whose sum is σ = 4497009888. Its totient is φ = 1258637952.

The previous prime is 2543497897. The next prime is 2543497921. The reversal of 2543497916 is 6197943452.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3277316 + ... + 3278091.

It is an arithmetic number, because the mean of its divisors is an integer number (374750824).

Almost surely, 2^2543497916 is an apocalyptic number.

It is an amenable number.

2543497916 is a deficient number, since it is larger than the sum of its proper divisors (1953511972).

2543497916 is a wasteful number, since it uses less digits than its factorization.

2543497916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555508 (or 6555506 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 2543497916 is about 50433.1033746685. The cubic root of 2543497916 is about 1365.0350263613.

The spelling of 2543497916 in words is "two billion, five hundred forty-three million, four hundred ninety-seven thousand, nine hundred sixteen".