1849519872 has 72 divisors (see below), whose sum is σ = 5469376080. Its totient is φ = 616504320.

The previous prime is 1849519871. The next prime is 1849519877. The reversal of 1849519872 is 2789159481.

It is a happy number.

1849519872 is a `hidden beast` number, since 1 + 8 + 49 + 519 + 87 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849519871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126879 + ... + 140702.

Almost surely, 2^1849519872 is an apocalyptic number.

1849519872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1849519872 is an abundant number, since it is smaller than the sum of its proper divisors (3619856208).

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

1849519872 is an equidigital number, since it uses as much as digits as its factorization.

1849519872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267606 (or 267586 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 1849519872 is about 43006.0445984050. The cubic root of 1849519872 is about 1227.4948177918.

The spelling of 1849519872 in words is "one billion, eight hundred forty-nine million, five hundred nineteen thousand, eight hundred seventy-two".