2190145369 has 4 divisors (see below), whose sum is σ = 2190266596. Its totient is φ = 2190024144.

The previous prime is 2190145357. The next prime is 2190145417. The reversal of 2190145369 is 9635410912.

2190145369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1487259225 + 702886144 = 38565^2 + 26512^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190145369 - 2¹⁷ = 2190014297 is a prime.

It is a super-2 number, since 2×2190145369² = 9593473474704292322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2190145469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27474 + ... + 71659.

It is an arithmetic number, because the mean of its divisors is an integer number (547566649).

Almost surely, 2^2190145369 is an apocalyptic number.

It is an amenable number.

2190145369 is a deficient number, since it is larger than the sum of its proper divisors (121227).

2190145369 is an equidigital number, since it uses as much as digits as its factorization.

2190145369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121226.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 2190145369 is about 46798.9889741221. The cubic root of 2190145369 is about 1298.6465932566.

The spelling of 2190145369 in words is "two billion, one hundred ninety million, one hundred forty-five thousand, three hundred sixty-nine".