2547999149 has 4 divisors (see below), whose sum is σ = 2548197600. Its totient is φ = 2547800700.

The previous prime is 2547999143. The next prime is 2547999163. The reversal of 2547999149 is 9419997452.

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.

It is a cyclic number.

It is not a de Polignac number, because 2547999149 - 2¹⁶ = 2547933613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2547999143) 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, 78527 + ... + 106124.

It is an arithmetic number, because the mean of its divisors is an integer number (637049400).

Almost surely, 2^2547999149 is an apocalyptic number.

It is an amenable number.

2547999149 is a deficient number, since it is larger than the sum of its proper divisors (198451).

2547999149 is a wasteful number, since it uses less digits than its factorization.

2547999149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198450.

The product of its digits is 7348320, while the sum is 59.

The square root of 2547999149 is about 50477.7094270332. The cubic root of 2547999149 is about 1365.8397868288.

The spelling of 2547999149 in words is "two billion, five hundred forty-seven million, nine hundred ninety-nine thousand, one hundred forty-nine".