2549423536 has 90 divisors (see below), whose sum is σ = 5525034396. Its totient is φ = 1138737600.

The previous prime is 2549423533. The next prime is 2549423537. The reversal of 2549423536 is 6353249452.

It is a junction number, because it is equal to n+sod(n) for n = 2549423492 and 2549423501.

It is not an unprimeable number, because it can be changed into a prime (2549423531) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12082471 + ... + 12082681.

Almost surely, 2^2549423536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2549423536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2762517198).

2549423536 is an abundant number, since it is smaller than the sum of its proper divisors (2975610860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2549423536 is a wasteful number, since it uses less digits than its factorization.

2549423536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 303 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The square root of 2549423536 is about 50491.8165250568. The cubic root of 2549423536 is about 1366.0942508104.

The spelling of 2549423536 in words is "two billion, five hundred forty-nine million, four hundred twenty-three thousand, five hundred thirty-six".