1849817902 has 4 divisors (see below), whose sum is σ = 2774726856. Its totient is φ = 924908950.

The previous prime is 1849817899. The next prime is 1849817933. The reversal of 1849817902 is 2097189481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2097189481 = 127 ⋅16513303.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462454474 + ... + 462454477.

It is an arithmetic number, because the mean of its divisors is an integer number (693681714).

Almost surely, 2^1849817902 is an apocalyptic number.

1849817902 is a deficient number, since it is larger than the sum of its proper divisors (924908954).

1849817902 is an equidigital number, since it uses as much as digits as its factorization.

1849817902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924908953.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 1849817902 is about 43009.5094368676. The cubic root of 1849817902 is about 1227.5607467279.

The spelling of 1849817902 in words is "one billion, eight hundred forty-nine million, eight hundred seventeen thousand, nine hundred two".