2388745440 has 144 divisors (see below), whose sum is σ = 8202409488. Its totient is φ = 633028608.

The previous prime is 2388745391. The next prime is 2388745451. The reversal of 2388745440 is 445478832.

It is a happy number.

2388745440 is a `hidden beast` number, since 2 + 38 + 8 + 74 + 544 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×2388745440² = 11412209554241587200, 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 23 ways as a sum of consecutive naturals, for example, 229632 + ... + 239808.

It is an arithmetic number, because the mean of its divisors is an integer number (56961177).

Almost surely, 2^2388745440 is an apocalyptic number.

2388745440 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 2388745440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4101204744).

2388745440 is an abundant number, since it is smaller than the sum of its proper divisors (5813664048).

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

2388745440 is a wasteful number, since it uses less digits than its factorization.

2388745440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10361 (or 10350 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The square root of 2388745440 is about 48874.7935034001. The cubic root of 2388745440 is about 1336.7697943316.

The spelling of 2388745440 in words is "two billion, three hundred eighty-eight million, seven hundred forty-five thousand, four hundred forty".