4691388240 has 640 divisors, whose sum is σ = 20495831040. Its totient is φ = 958003200.

The previous prime is 4691388239. The next prime is 4691388241. The reversal of 4691388240 is 428831964.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4691388239) and next prime (4691388241).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4691388241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11143230 + ... + 11143650.

It is an arithmetic number, because the mean of its divisors is an integer number (32024736).

Almost surely, 2^4691388240 is an apocalyptic number.

4691388240 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 4691388240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10247915520).

4691388240 is an abundant number, since it is smaller than the sum of its proper divisors (15804442800).

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

4691388240 is a wasteful number, since it uses less digits than its factorization.

4691388240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 4691388240 is about 68493.7094921862. The cubic root of 4691388240 is about 1674.0449879355.

The spelling of 4691388240 in words is "four billion, six hundred ninety-one million, three hundred eighty-eight thousand, two hundred forty".