2173796442 has 48 divisors (see below), whose sum is σ = 4897774440. Its totient is φ = 695955456.

The previous prime is 2173796411. The next prime is 2173796459. The reversal of 2173796442 is 2446973712.

2173796442 is a `hidden beast` number, since 217 + 379 + 64 + 4 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1956204441 + 217592001 = 44229^2 + 14751^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89958 + ... + 111534.

Almost surely, 2^2173796442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173796442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2448887220).

2173796442 is an abundant number, since it is smaller than the sum of its proper divisors (2723977998).

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

2173796442 is a wasteful number, since it uses less digits than its factorization.

2173796442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21807 (or 21804 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 2173796442 is about 46623.9899836983. The cubic root of 2173796442 is about 1295.4071541169.

The spelling of 2173796442 in words is "two billion, one hundred seventy-three million, seven hundred ninety-six thousand, four hundred forty-two".