1643089849630 has 16 divisors (see below), whose sum is σ = 2972885886864. Its totient is φ = 653830571520.

The previous prime is 1643089849627. The next prime is 1643089849631. The reversal of 1643089849630 is 369489803461.

It is a super-2 number, since 2×1643089849630² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1643089849631) 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, 425669016 + ... + 425672875.

It is an arithmetic number, because the mean of its divisors is an integer number (185805367929).

Almost surely, 2^{1643089849630} is an apocalyptic number.

1643089849630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1643089849630 is a deficient number, since it is larger than the sum of its proper divisors (1329796037234).

1643089849630 is a wasteful number, since it uses less digits than its factorization.

1643089849630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851342091.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 1643089849630 in words is "one trillion, six hundred forty-three billion, eighty-nine million, eight hundred forty-nine thousand, six hundred thirty".