1853138830203 has 24 divisors (see below), whose sum is σ = 2834956819968. Its totient is φ = 1209140222184.

The previous prime is 1853138830157. The next prime is 1853138830223. The reversal of 1853138830203 is 3020388313581.

1853138830203 is a `hidden beast` number, since 1 + 8 + 5 + 31 + 388 + 30 + 203 = 666.

It is not a de Polignac number, because 1853138830203 - 2⁹ = 1853138829691 is a prime.

It is a super-2 number, since 2×1853138830203² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1853138830223) 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, 81117151 + ... + 81139992.

It is an arithmetic number, because the mean of its divisors is an integer number (118123200832).

Almost surely, 2^{1853138830203} is an apocalyptic number.

1853138830203 is a deficient number, since it is larger than the sum of its proper divisors (981817989765).

1853138830203 is an equidigital number, since it uses as much as digits as its factorization.

1853138830203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162257205 (or 162257193 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1853138830203 in words is "one trillion, eight hundred fifty-three billion, one hundred thirty-eight million, eight hundred thirty thousand, two hundred three".