2945742756 has 96 divisors (see below), whose sum is σ = 7972328448. Its totient is φ = 837682560.

The previous prime is 2945742743. The next prime is 2945742763. The reversal of 2945742756 is 6572475492.

It is a junction number, because it is equal to n+sod(n) for n = 2945742699 and 2945742708.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151755 + ... + 170061.

It is an arithmetic number, because the mean of its divisors is an integer number (83045088).

Almost surely, 2^2945742756 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 2945742756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3986164224).

2945742756 is an abundant number, since it is smaller than the sum of its proper divisors (5026585692).

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

2945742756 is a wasteful number, since it uses less digits than its factorization.

2945742756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18401 (or 18399 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The square root of 2945742756 is about 54274.6971986026. The cubic root of 2945742756 is about 1433.5018996030.

The spelling of 2945742756 in words is "two billion, nine hundred forty-five million, seven hundred forty-two thousand, seven hundred fifty-six".