1872539493 has 12 divisors (see below), whose sum is σ = 2744328384. Its totient is φ = 1134872200.

The previous prime is 1872539467. The next prime is 1872539521. The reversal of 1872539493 is 3949352781.

It is not a de Polignac number, because 1872539493 - 2¹⁶ = 1872473957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872539423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2578893 + ... + 2579618.

It is an arithmetic number, because the mean of its divisors is an integer number (228694032).

Almost surely, 2^1872539493 is an apocalyptic number.

It is an amenable number.

1872539493 is a deficient number, since it is larger than the sum of its proper divisors (871788891).

1872539493 is a wasteful number, since it uses less digits than its factorization.

1872539493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158536 (or 5158525 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 1872539493 is about 43272.8493746367. The cubic root of 1872539493 is about 1232.5664115339.

The spelling of 1872539493 in words is "one billion, eight hundred seventy-two million, five hundred thirty-nine thousand, four hundred ninety-three".