1849897494 has 64 divisors (see below), whose sum is σ = 4361625600. Its totient is φ = 579537504.

The previous prime is 1849897463. The next prime is 1849897519. The reversal of 1849897494 is 4947989481.

It is a happy number.

1849897494 is a `hidden beast` number, since 18 + 49 + 8 + 97 + 494 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123204 + ... + 137400.

It is an arithmetic number, because the mean of its divisors is an integer number (68150400).

Almost surely, 2^1849897494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1849897494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180812800).

1849897494 is an abundant number, since it is smaller than the sum of its proper divisors (2511728106).

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

1849897494 is a wasteful number, since it uses less digits than its factorization.

1849897494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14354 (or 14348 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 1849897494 is about 43010.4347106606. The cubic root of 1849897494 is about 1227.5783525354.

The spelling of 1849897494 in words is "one billion, eight hundred forty-nine million, eight hundred ninety-seven thousand, four hundred ninety-four".