1641797088 has 48 divisors (see below), whose sum is σ = 4316404176. Its totient is φ = 546416640.

The previous prime is 1641797081. The next prime is 1641797089. The reversal of 1641797088 is 8807971461.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1641797088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641797081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50520 + ... + 76392.

It is an arithmetic number, because the mean of its divisors is an integer number (89925087).

Almost surely, 2^1641797088 is an apocalyptic number.

It is an amenable number.

1641797088 is an abundant number, since it is smaller than the sum of its proper divisors (2674607088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641797088 is a wasteful number, since it uses less digits than its factorization.

1641797088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26547 (or 26539 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 51.

The square root of 1641797088 is about 40519.0953502173. The cubic root of 1641797088 is about 1179.7042943794.

The spelling of 1641797088 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, eighty-eight".