490191019 has 8 divisors (see below), whose sum is σ = 512007840. Its totient is φ = 468416256.

The previous prime is 490191017. The next prime is 490191061. The reversal of 490191019 is 910191094.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490191019 - 2¹ = 490191017 is a prime.

It is a super-2 number, since 2×490191019² = 480574470216516722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490191017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14619 + ... + 34555.

It is an arithmetic number, because the mean of its divisors is an integer number (64000980).

Almost surely, 2^490191019 is an apocalyptic number.

490191019 is a deficient number, since it is larger than the sum of its proper divisors (21816821).

490191019 is a wasteful number, since it uses less digits than its factorization.

490191019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21029.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 490191019 is about 22140.2578801603. The cubic root of 490191019 is about 788.4759481173.

The spelling of 490191019 in words is "four hundred ninety million, one hundred ninety-one thousand, nineteen".