4539454920 has 1536 divisors, whose sum is σ = 22768128000. Its totient is φ = 776355840.

The previous prime is 4539454919. The next prime is 4539454943. The reversal of 4539454920 is 294549354.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 238918671 + ... + 238918689.

It is an arithmetic number, because the mean of its divisors is an integer number (14823000).

Almost surely, 2^4539454920 is an apocalyptic number.

4539454920 is a gapful number since it is divisible by the number (40) 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 4539454920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11384064000).

4539454920 is an abundant number, since it is smaller than the sum of its proper divisors (18228673080).

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

4539454920 is a wasteful number, since it uses less digits than its factorization.

4539454920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The square root of 4539454920 is about 67375.4771411676. The cubic root of 4539454920 is about 1655.7746752866.

The spelling of 4539454920 in words is "four billion, five hundred thirty-nine million, four hundred fifty-four thousand, nine hundred twenty".