2190066445 has 32 divisors (see below), whose sum is σ = 3247084800. Its totient is φ = 1384252416.

The previous prime is 2190066413. The next prime is 2190066449. The reversal of 2190066445 is 5446600912.

It is a cyclic number.

It is not a de Polignac number, because 2190066445 - 2⁵ = 2190066413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190066449) 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, 19900 + ... + 69109.

It is an arithmetic number, because the mean of its divisors is an integer number (101471400).

Almost surely, 2^2190066445 is an apocalyptic number.

It is an amenable number.

2190066445 is a deficient number, since it is larger than the sum of its proper divisors (1057018355).

2190066445 is a wasteful number, since it uses less digits than its factorization.

2190066445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89077.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2190066445 is about 46798.1457431809. The cubic root of 2190066445 is about 1298.6309937418.

The spelling of 2190066445 in words is "two billion, one hundred ninety million, sixty-six thousand, four hundred forty-five".