2188350738 has 96 divisors (see below), whose sum is σ = 5859869184. Its totient is φ = 575917056.

The previous prime is 2188350737. The next prime is 2188350743. The reversal of 2188350738 is 8370538812.

It is a junction number, because it is equal to n+sod(n) for n = 2188350693 and 2188350702.

It is not an unprimeable number, because it can be changed into a prime (2188350733) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89806 + ... + 111542.

It is an arithmetic number, because the mean of its divisors is an integer number (61040304).

Almost surely, 2^2188350738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2188350738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2929934592).

2188350738 is an abundant number, since it is smaller than the sum of its proper divisors (3671518446).

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

2188350738 is a wasteful number, since it uses less digits than its factorization.

2188350738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21816 (or 21813 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2188350738 is about 46779.8112223639. The cubic root of 2188350738 is about 1298.2917875393.

The spelling of 2188350738 in words is "two billion, one hundred eighty-eight million, three hundred fifty thousand, seven hundred thirty-eight".