190641531 has 8 divisors (see below), whose sum is σ = 258355984. Its totient is φ = 125010720.

The previous prime is 190641523. The next prime is 190641559. The reversal of 190641531 is 135146091.

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

It is not a de Polignac number, because 190641531 - 2³ = 190641523 is a prime.

It is a super-2 number, since 2×190641531² = 72688386684047922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190641511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520696 + ... + 521061.

It is an arithmetic number, because the mean of its divisors is an integer number (32294498).

Almost surely, 2^190641531 is an apocalyptic number.

190641531 is a deficient number, since it is larger than the sum of its proper divisors (67714453).

190641531 is a wasteful number, since it uses less digits than its factorization.

190641531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041821.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 190641531 is about 13807.2999170729. The cubic root of 190641531 is about 575.5360153568.

The spelling of 190641531 in words is "one hundred ninety million, six hundred forty-one thousand, five hundred thirty-one".