2019450076381 has 4 divisors (see below), whose sum is σ = 2084593627264. Its totient is φ = 1954306525500.

The previous prime is 2019450076331. The next prime is 2019450076409. The reversal of 2019450076381 is 1836700549102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2019450076381 - 2¹⁷ = 2019449945309 is a prime.

It is a super-2 number, since 2×2019450076381² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019450076331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32571775395 + ... + 32571775456.

It is an arithmetic number, because the mean of its divisors is an integer number (521148406816).

It is a 2-persistent number, because it is pandigital, and so is 2⋅2019450076381 = 4038900152762, but 3⋅2019450076381 = 6058350229143 is not.

Almost surely, 2^{2019450076381} is an apocalyptic number.

It is an amenable number.

2019450076381 is a deficient number, since it is larger than the sum of its proper divisors (65143550883).

2019450076381 is an equidigital number, since it uses as much as digits as its factorization.

2019450076381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65143550882.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 2019450076381 in words is "two trillion, nineteen billion, four hundred fifty million, seventy-six thousand, three hundred eighty-one".