2147990533 has 16 divisors (see below), whose sum is σ = 2393162352. Its totient is φ = 1915200000.

The previous prime is 2147990503. The next prime is 2147990543. The reversal of 2147990533 is 3350997412.

It can be written as a sum of positive squares in 8 ways, for example, as 447830244 + 1700160289 = 21162^2 + 41233^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147990533 - 2⁵ = 2147990501 is a prime.

It is a super-2 number, since 2×2147990533² = 9227726659715248178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2147990533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147990503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33883 + ... + 73783.

It is an arithmetic number, because the mean of its divisors is an integer number (149572647).

Almost surely, 2^2147990533 is an apocalyptic number.

It is an amenable number.

2147990533 is a deficient number, since it is larger than the sum of its proper divisors (245171819).

2147990533 is a wasteful number, since it uses less digits than its factorization.

2147990533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40056.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 2147990533 is about 46346.4187721123. The cubic root of 2147990533 is about 1290.2606554193.

The spelling of 2147990533 in words is "two billion, one hundred forty-seven million, nine hundred ninety thousand, five hundred thirty-three".