1849397916 has 12 divisors (see below), whose sum is σ = 4315261832. Its totient is φ = 616465968.

The previous prime is 1849397903. The next prime is 1849397929. The reversal of 1849397916 is 6197939481.

It is an interprime number because it is at equal distance from previous prime (1849397903) and next prime (1849397929).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 77058235 + ... + 77058258.

Almost surely, 2^1849397916 is an apocalyptic number.

It is an amenable number.

1849397916 is an abundant number, since it is smaller than the sum of its proper divisors (2465863916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1849397916 is a wasteful number, since it uses less digits than its factorization.

1849397916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154116500 (or 154116498 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The square root of 1849397916 is about 43004.6266813235. The cubic root of 1849397916 is about 1227.4678371592.

The spelling of 1849397916 in words is "one billion, eight hundred forty-nine million, three hundred ninety-seven thousand, nine hundred sixteen".