1652981219 has 4 divisors (see below), whose sum is σ = 1653775344. Its totient is φ = 1652187096.

The previous prime is 1652981173. The next prime is 1652981221. The reversal of 1652981219 is 9121892561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9121892561 = 3457 ⋅2638673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1652981219 is a prime.

It is a super-2 number, since 2×1652981219² = 5464693820733451922, 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 1652981219.

It is not an unprimeable number, because it can be changed into a prime (1652981249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393932 + ... + 398105.

It is an arithmetic number, because the mean of its divisors is an integer number (413443836).

Almost surely, 2^1652981219 is an apocalyptic number.

1652981219 is a deficient number, since it is larger than the sum of its proper divisors (794125).

1652981219 is an equidigital number, since it uses as much as digits as its factorization.

1652981219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794124.

The product of its digits is 77760, while the sum is 44.

The square root of 1652981219 is about 40656.8717316028. The cubic root of 1652981219 is about 1182.3769999316.

The spelling of 1652981219 in words is "one billion, six hundred fifty-two million, nine hundred eighty-one thousand, two hundred nineteen".