2190443742 has 64 divisors (see below), whose sum is σ = 4982400000. Its totient is φ = 713007360.

The previous prime is 2190443741. The next prime is 2190443743. The reversal of 2190443742 is 2473440912.

2190443742 is a `hidden beast` number, since 219 + 0 + 4 + 437 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2190443741) and next prime (2190443743).

It is a junction number, because it is equal to n+sod(n) for n = 2190443697 and 2190443706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190443741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1753134 + ... + 1754382.

It is an arithmetic number, because the mean of its divisors is an integer number (77850000).

Almost surely, 2^2190443742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2190443742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2491200000).

2190443742 is an abundant number, since it is smaller than the sum of its proper divisors (2791956258).

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

2190443742 is a wasteful number, since it uses less digits than its factorization.

2190443742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2190443742 is about 46802.1766801503. The cubic root of 2190443742 is about 1298.7055639975.

The spelling of 2190443742 in words is "two billion, one hundred ninety million, four hundred forty-three thousand, seven hundred forty-two".