1849457136 has 160 divisors (see below), whose sum is σ = 5131368000. Its totient is φ = 572866560.

The previous prime is 1849457111. The next prime is 1849457171. The reversal of 1849457136 is 6317549481.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 7673976 + ... + 7674216.

It is an arithmetic number, because the mean of its divisors is an integer number (32071050).

Almost surely, 2^1849457136 is an apocalyptic number.

1849457136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1849457136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565684000).

1849457136 is an abundant number, since it is smaller than the sum of its proper divisors (3281910864).

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

1849457136 is a wasteful number, since it uses less digits than its factorization.

1849457136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 461 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 1849457136 is about 43005.3152063789. The cubic root of 1849457136 is about 1227.4809386968.

The spelling of 1849457136 in words is "one billion, eight hundred forty-nine million, four hundred fifty-seven thousand, one hundred thirty-six".