1849064921 has 16 divisors (see below), whose sum is σ = 2107347840. Its totient is φ = 1605985920.

The previous prime is 1849064909. The next prime is 1849064923. The reversal of 1849064921 is 1294609481.

It is a de Polignac number, because none of the positive numbers 2^k-1849064921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1849064923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237275 + ... + 244943.

It is an arithmetic number, because the mean of its divisors is an integer number (131709240).

Almost surely, 2^1849064921 is an apocalyptic number.

1849064921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1849064921 is a deficient number, since it is larger than the sum of its proper divisors (258282919).

1849064921 is a wasteful number, since it uses less digits than its factorization.

1849064921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1849064921 is about 43000.7548887226. The cubic root of 1849064921 is about 1227.3941617964.

The spelling of 1849064921 in words is "one billion, eight hundred forty-nine million, sixty-four thousand, nine hundred twenty-one".