28013183919 has 36 divisors (see below), whose sum is σ = 49547142840. Its totient is φ = 15165027360.

The previous prime is 28013183909. The next prime is 28013183929. The reversal of 28013183919 is 91938131082.

It is an interprime number because it is at equal distance from previous prime (28013183909) and next prime (28013183929).

It is not a de Polignac number, because 28013183919 - 2⁸ = 28013183663 is a prime.

It is a super-2 number, since 2×28013183919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28013183909) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1663252 + ... + 1680009.

Almost surely, 2^28013183919 is an apocalyptic number.

28013183919 is a deficient number, since it is larger than the sum of its proper divisors (21533958921).

28013183919 is a wasteful number, since it uses less digits than its factorization.

28013183919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343300 (or 3343290 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 28013183919 in words is "twenty-eight billion, thirteen million, one hundred eighty-three thousand, nine hundred nineteen".