2019438090 has 48 divisors (see below), whose sum is σ = 5324507136. Its totient is φ = 530930400.

The previous prime is 2019438077. The next prime is 2019438097. The reversal of 2019438090 is 908349102.

2019438090 is a `hidden beast` number, since 2 + 0 + 194 + 380 + 90 = 666.

It is not an unprimeable number, because it can be changed into a prime (2019438097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151626 + ... + 164405.

It is an arithmetic number, because the mean of its divisors is an integer number (110927232).

Almost surely, 2^2019438090 is an apocalyptic number.

2019438090 is an abundant number, since it is smaller than the sum of its proper divisors (3305069046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2019438090 is a wasteful number, since it uses less digits than its factorization.

2019438090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316115 (or 316112 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2019438090 is about 44938.1585069971. The cubic root of 2019438090 is about 1263.9896404141.

The spelling of 2019438090 in words is "two billion, nineteen million, four hundred thirty-eight thousand, ninety".