2549473920 has 384 divisors, whose sum is σ = 10507060800. Its totient is φ = 582543360.

The previous prime is 2549473907. The next prime is 2549473943. The reversal of 2549473920 is 293749452.

2549473920 is a `hidden beast` number, since 2 + 5 + 494 + 73 + 92 + 0 = 666.

2549473920 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 845215 + ... + 848225.

Almost surely, 2^2549473920 is an apocalyptic number.

2549473920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2549473920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5253530400).

2549473920 is an abundant number, since it is smaller than the sum of its proper divisors (7957586880).

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

2549473920 is a wasteful number, since it uses less digits than its factorization.

2549473920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053 (or 3028 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 2549473920 is about 50492.3154549284. The cubic root of 2549473920 is about 1366.1032500788.

The spelling of 2549473920 in words is "two billion, five hundred forty-nine million, four hundred seventy-three thousand, nine hundred twenty".