2148409619 has 4 divisors (see below), whose sum is σ = 2149479960. Its totient is φ = 2147339280.

The previous prime is 2148409609. The next prime is 2148409631. The reversal of 2148409619 is 9169048412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2148409619 - 2⁴ = 2148409603 is a prime.

It is a super-2 number, since 2×2148409619² = 9231327782023450322, 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 2148409619.

It is not an unprimeable number, because it can be changed into a prime (2148409609) 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, 532154 + ... + 536175.

It is an arithmetic number, because the mean of its divisors is an integer number (537369990).

Almost surely, 2^2148409619 is an apocalyptic number.

2148409619 is a deficient number, since it is larger than the sum of its proper divisors (1070341).

2148409619 is a wasteful number, since it uses less digits than its factorization.

2148409619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070340.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 2148409619 is about 46350.9397855103. The cubic root of 2148409619 is about 1290.3445625262.

The spelling of 2148409619 in words is "two billion, one hundred forty-eight million, four hundred nine thousand, six hundred nineteen".