19143090 has 24 divisors (see below), whose sum is σ = 49772268. Its totient is φ = 5104800.

The previous prime is 19143083. The next prime is 19143101. The reversal of 19143090 is 9034191.

It can be written as a sum of positive squares in 2 ways, for example, as 18948609 + 194481 = 4353^2 + 441^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106261 + ... + 106440.

Almost surely, 2^19143090 is an apocalyptic number.

19143090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19143090 is an abundant number, since it is smaller than the sum of its proper divisors (30629178).

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

19143090 is a wasteful number, since it uses less digits than its factorization.

19143090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212714 (or 212711 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19143090 is about 4375.2817052162. The cubic root of 19143090 is about 267.5083527249.

The spelling of 19143090 in words is "nineteen million, one hundred forty-three thousand, ninety".