1641641026849 has 8 divisors (see below), whose sum is σ = 1643153938560. Its totient is φ = 1640128574016.

The previous prime is 1641641026847. The next prime is 1641641026873. The reversal of 1641641026849 is 9486201461461.

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 1641641026849 - 2¹ = 1641641026847 is a prime.

It is a super-2 number, since 2×1641641026849² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1641641026796 and 1641641026805.

It is not an unprimeable number, because it can be changed into a prime (1641641026843) 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, 7260892 + ... + 7483570.

It is an arithmetic number, because the mean of its divisors is an integer number (205394242320).

Almost surely, 2^{1641641026849} is an apocalyptic number.

It is an amenable number.

1641641026849 is a deficient number, since it is larger than the sum of its proper divisors (1512911711).

1641641026849 is a wasteful number, since it uses less digits than its factorization.

1641641026849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229439.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 1641641026849 in words is "one trillion, six hundred forty-one billion, six hundred forty-one million, twenty-six thousand, eight hundred forty-nine".