1873813645 has 8 divisors (see below), whose sum is σ = 2452992480. Its totient is φ = 1362773520.

The previous prime is 1873813633. The next prime is 1873813663. The reversal of 1873813645 is 5463183781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1873813645 - 2¹⁵ = 1873780877 is a prime.

It is a super-3 number, since 3×1873813645³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1873813595 and 1873813604.

It is a congruent 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, 17034615 + ... + 17034724.

It is an arithmetic number, because the mean of its divisors is an integer number (306624060).

Almost surely, 2^1873813645 is an apocalyptic number.

It is an amenable number.

1873813645 is a deficient number, since it is larger than the sum of its proper divisors (579178835).

1873813645 is a wasteful number, since it uses less digits than its factorization.

1873813645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34069355.

The product of its digits is 483840, while the sum is 46.

The square root of 1873813645 is about 43287.5691740712. The cubic root of 1873813645 is about 1232.8459109149.

It can be divided in two parts, 1873 and 813645, that added together give a palindrome (815518).

The spelling of 1873813645 in words is "one billion, eight hundred seventy-three million, eight hundred thirteen thousand, six hundred forty-five".