1891004252 has 12 divisors (see below), whose sum is σ = 3309572280. Its totient is φ = 945412176.

The previous prime is 1891004243. The next prime is 1891004303. The reversal of 1891004252 is 2524001981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52874 + ... + 81102.

It is an arithmetic number, because the mean of its divisors is an integer number (275797690).

Almost surely, 2^1891004252 is an apocalyptic number.

It is an amenable number.

1891004252 is a deficient number, since it is larger than the sum of its proper divisors (1418568028).

1891004252 is a wasteful number, since it uses less digits than its factorization.

1891004252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44980 (or 44978 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1891004252 is about 43485.6787000042. The cubic root of 1891004252 is about 1236.6045357716.

The spelling of 1891004252 in words is "one billion, eight hundred ninety-one million, four thousand, two hundred fifty-two".