1641110551 has 8 divisors (see below), whose sum is σ = 1698156000. Its totient is φ = 1584095520.

The previous prime is 1641110483. The next prime is 1641110561. The reversal of 1641110551 is 1550111461.

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 1641110551 - 2⁷ = 1641110423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641110561) 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, 186550 + ... + 195148.

It is an arithmetic number, because the mean of its divisors is an integer number (212269500).

Almost surely, 2^1641110551 is an apocalyptic number.

1641110551 is a deficient number, since it is larger than the sum of its proper divisors (57045449).

1641110551 is an equidigital number, since it uses as much as digits as its factorization.

1641110551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15209.

The product of its (nonzero) digits is 600, while the sum is 25.

The square root of 1641110551 is about 40510.6226933134. The cubic root of 1641110551 is about 1179.5398356550.

It can be divided in two parts, 16411 and 10551, that added together give a palindrome (26962).

The spelling of 1641110551 in words is "one billion, six hundred forty-one million, one hundred ten thousand, five hundred fifty-one".