2813745438 has 80 divisors (see below), whose sum is σ = 7400425824. Its totient is φ = 782187840.

The previous prime is 2813745437. The next prime is 2813745439. The reversal of 2813745438 is 8345473182.

2813745438 is a `hidden beast` number, since 28 + 13 + 74 + 543 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (2813745437) and next prime (2813745439).

It is a junction number, because it is equal to n+sod(n) for n = 2813745393 and 2813745402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813745437) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8428 + ... + 75488.

Almost surely, 2^2813745438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2813745438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3700212912).

2813745438 is an abundant number, since it is smaller than the sum of its proper divisors (4586680386).

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

2813745438 is a wasteful number, since it uses less digits than its factorization.

2813745438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67119 (or 67110 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 2813745438 is about 53044.7493914336. The cubic root of 2813745438 is about 1411.7623684906.

The spelling of 2813745438 in words is "two billion, eight hundred thirteen million, seven hundred forty-five thousand, four hundred thirty-eight".