2190952445 has 30 divisors (see below), whose sum is σ = 2908852890. Its totient is φ = 1584209440.

The previous prime is 2190952441. The next prime is 2190952451. The reversal of 2190952445 is 5442590912.

It can be written as a sum of positive squares in 3 ways, for example, as 1131515044 + 1059437401 = 33638^2 + 32549^2 .

It is not a de Polignac number, because 2190952445 - 2² = 2190952441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190952441) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 12664379 + ... + 12664551.

It is an arithmetic number, because the mean of its divisors is an integer number (96961763).

Almost surely, 2^2190952445 is an apocalyptic number.

It is an amenable number.

2190952445 is a deficient number, since it is larger than the sum of its proper divisors (717900445).

2190952445 is an frugal number, since it uses more digits than its factorization.

2190952445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 2190952445 is about 46807.6109730031. The cubic root of 2190952445 is about 1298.8060922249.

The spelling of 2190952445 in words is "two billion, one hundred ninety million, nine hundred fifty-two thousand, four hundred forty-five".