1641190431 has 8 divisors (see below), whose sum is σ = 2189867184. Its totient is φ = 1093320320.

The previous prime is 1641190429. The next prime is 1641190483. The reversal of 1641190431 is 1340911461.

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 1641190431 - 2¹ = 1641190429 is a prime.

It is a super-2 number, since 2×1641190431² = 5387012061611931522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641195431) 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, 196896 + ... + 205061.

It is an arithmetic number, because the mean of its divisors is an integer number (273733398).

Almost surely, 2^1641190431 is an apocalyptic number.

1641190431 is a deficient number, since it is larger than the sum of its proper divisors (548676753).

1641190431 is a wasteful number, since it uses less digits than its factorization.

1641190431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403321.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1641190431 is about 40511.6085955618. The cubic root of 1641190431 is about 1179.5589731253.

The spelling of 1641190431 in words is "one billion, six hundred forty-one million, one hundred ninety thousand, four hundred thirty-one".