1853972141 has 4 divisors (see below), whose sum is σ = 2118825312. Its totient is φ = 1589118972.

The previous prime is 1853972119. The next prime is 1853972161. The reversal of 1853972141 is 1412793581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1853972141 - 2¹⁸ = 1853709997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1853972161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132426575 + ... + 132426588.

It is an arithmetic number, because the mean of its divisors is an integer number (529706328).

Almost surely, 2^1853972141 is an apocalyptic number.

It is an amenable number.

1853972141 is a deficient number, since it is larger than the sum of its proper divisors (264853171).

1853972141 is an equidigital number, since it uses as much as digits as its factorization.

1853972141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264853170.

The product of its digits is 60480, while the sum is 41.

The square root of 1853972141 is about 43057.7767772559. The cubic root of 1853972141 is about 1228.4789935111.

The spelling of 1853972141 in words is "one billion, eight hundred fifty-three million, nine hundred seventy-two thousand, one hundred forty-one".