1852428101661 has 24 divisors (see below), whose sum is σ = 2680826601024. Its totient is φ = 1232601685440.

The previous prime is 1852428101621. The next prime is 1852428101669. The reversal of 1852428101661 is 1661018242581.

1852428101661 is a `hidden beast` number, since 1 + 8 + 52 + 428 + 10 + 166 + 1 = 666.

It is not a de Polignac number, because 1852428101661 - 2⁶ = 1852428101597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1852428101669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10455826 + ... + 10631516.

It is an arithmetic number, because the mean of its divisors is an integer number (111701108376).

Almost surely, 2^{1852428101661} is an apocalyptic number.

It is an amenable number.

1852428101661 is a deficient number, since it is larger than the sum of its proper divisors (828398499363).

1852428101661 is a wasteful number, since it uses less digits than its factorization.

1852428101661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177921 (or 177918 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 1852428101661 in words is "one trillion, eight hundred fifty-two billion, four hundred twenty-eight million, one hundred one thousand, six hundred sixty-one".