189053648810 has 16 divisors (see below), whose sum is σ = 366473227176. Its totient is φ = 69804424128.

The previous prime is 189053648801. The next prime is 189053648821. The reversal of 189053648810 is 18846350981.

It is a Cunningham number, because it is equal to 434803²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 140324410801 + 48729238009 = 374599^2 + 220747^2 .

It is a super-2 number, since 2×189053648810² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727129289 + ... + 727129548.

Almost surely, 2^189053648810 is an apocalyptic number.

189053648810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189053648810 is a deficient number, since it is larger than the sum of its proper divisors (177419578366).

189053648810 is a wasteful number, since it uses less digits than its factorization.

189053648810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454258857.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 189053648810 in words is "one hundred eighty-nine billion, fifty-three million, six hundred forty-eight thousand, eight hundred ten".