1849573979 has 6 divisors (see below), whose sum is σ = 2017872684. Its totient is φ = 1681301220.

The previous prime is 1849573961. The next prime is 1849573993. The reversal of 1849573979 is 9793759481.

It is not a de Polignac number, because 1849573979 - 2¹⁶ = 1849508443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1849573679) 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 5 ways as a sum of consecutive naturals, for example, 136154 + ... + 149120.

It is an arithmetic number, because the mean of its divisors is an integer number (336312114).

Almost surely, 2^1849573979 is an apocalyptic number.

1849573979 is a deficient number, since it is larger than the sum of its proper divisors (168298705).

1849573979 is an frugal number, since it uses more digits than its factorization.

1849573979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25945 (or 12978 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 62.

The square root of 1849573979 is about 43006.6736565385. The cubic root of 1849573979 is about 1227.5067876396.

The spelling of 1849573979 in words is "one billion, eight hundred forty-nine million, five hundred seventy-three thousand, nine hundred seventy-nine".