1819673952 has 48 divisors (see below), whose sum is σ = 4787122032. Its totient is φ = 605227520.

The previous prime is 1819673941. The next prime is 1819673953. The reversal of 1819673952 is 2593769181.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1819673952² = 6622426583174596608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1819673895 and 1819673904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819673953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23698 + ... + 64814.

It is an arithmetic number, because the mean of its divisors is an integer number (99731709).

Almost surely, 2^1819673952 is an apocalyptic number.

1819673952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1819673952 is an abundant number, since it is smaller than the sum of its proper divisors (2967448080).

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

1819673952 is a wasteful number, since it uses less digits than its factorization.

1819673952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41591 (or 41583 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 1819673952 is about 42657.6365027412. The cubic root of 1819673952 is about 1220.8562366916.

The spelling of 1819673952 in words is "one billion, eight hundred nineteen million, six hundred seventy-three thousand, nine hundred fifty-two".