2546997449 has 8 divisors (see below), whose sum is σ = 2609876808. Its totient is φ = 2484154240.

The previous prime is 2546997433. The next prime is 2546997451. The reversal of 2546997449 is 9447996452.

It can be written as a sum of positive squares in 4 ways, for example, as 252587449 + 2294410000 = 15893^2 + 47900^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2546997449 - 2⁴ = 2546997433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2546997419) 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, 183419 + ... + 196815.

It is an arithmetic number, because the mean of its divisors is an integer number (326234601).

Almost surely, 2^2546997449 is an apocalyptic number.

It is an amenable number.

2546997449 is a deficient number, since it is larger than the sum of its proper divisors (62879359).

2546997449 is a wasteful number, since it uses less digits than its factorization.

2546997449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18075.

The product of its digits is 19595520, while the sum is 59.

The square root of 2546997449 is about 50467.7862502409. The cubic root of 2546997449 is about 1365.6607782600.

The spelling of 2546997449 in words is "two billion, five hundred forty-six million, nine hundred ninety-seven thousand, four hundred forty-nine".