501490191 has 8 divisors (see below), whose sum is σ = 707986224. Its totient is φ = 314660480.

The previous prime is 501490189. The next prime is 501490207. The reversal of 501490191 is 191094105.

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

It is not a de Polignac number, because 501490191 - 2¹ = 501490189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501490991) 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, 4916520 + ... + 4916621.

It is an arithmetic number, because the mean of its divisors is an integer number (88498278).

Almost surely, 2^501490191 is an apocalyptic number.

501490191 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

501490191 is a deficient number, since it is larger than the sum of its proper divisors (206496033).

501490191 is a wasteful number, since it uses less digits than its factorization.

501490191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9833161.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 501490191 is about 22393.9766678453. The cubic root of 501490191 is about 794.4882541783.

The spelling of 501490191 in words is "five hundred one million, four hundred ninety thousand, one hundred ninety-one".