4645549440 has 576 divisors, whose sum is σ = 19125905760. Its totient is φ = 1017741312.

The previous prime is 4645549409. The next prime is 4645549471. The reversal of 4645549440 is 449455464.

4645549440 is a `hidden beast` number, since 4 + 6 + 4 + 554 + 94 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (4645549409) and next prime (4645549471).

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×4645549440² = 43162259198968627200, which contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 33909052 + ... + 33909188.

Almost surely, 2^4645549440 is an apocalyptic number.

4645549440 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 4645549440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9562952880).

4645549440 is an abundant number, since it is smaller than the sum of its proper divisors (14480356320).

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

4645549440 is a wasteful number, since it uses less digits than its factorization.

4645549440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The square root of 4645549440 is about 68158.2675836175. The cubic root of 4645549440 is about 1668.5748583600.

The spelling of 4645549440 in words is "four billion, six hundred forty-five million, five hundred forty-nine thousand, four hundred forty".