4309378820 has 48 divisors (see below), whose sum is σ = 9351853056. Its totient is φ = 1666320000.

The previous prime is 4309378819. The next prime is 4309378823. The reversal of 4309378820 is 288739034.

It is not an unprimeable number, because it can be changed into a prime (4309378823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654545 + ... + 661095.

It is an arithmetic number, because the mean of its divisors is an integer number (194830272).

Almost surely, 2^4309378820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4309378820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4675926528).

4309378820 is an abundant number, since it is smaller than the sum of its proper divisors (5042474236).

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

4309378820 is a wasteful number, since it uses less digits than its factorization.

4309378820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7652 (or 7650 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 4309378820 is about 65645.8591230247. The cubic root of 4309378820 is about 1627.3147376470.

The spelling of 4309378820 in words is "four billion, three hundred nine million, three hundred seventy-eight thousand, eight hundred twenty".