1891472325 has 24 divisors (see below), whose sum is σ = 3291828000. Its totient is φ = 955690560.

The previous prime is 1891472293. The next prime is 1891472333. The reversal of 1891472325 is 5232741981.

It is not a de Polignac number, because 1891472325 - 2⁵ = 1891472293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 662250 + ... + 665099.

It is an arithmetic number, because the mean of its divisors is an integer number (137159500).

Almost surely, 2^1891472325 is an apocalyptic number.

1891472325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1891472325 is a deficient number, since it is larger than the sum of its proper divisors (1400355675).

1891472325 is a wasteful number, since it uses less digits than its factorization.

1891472325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327381 (or 1327376 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 1891472325 is about 43491.0602882937. The cubic root of 1891472325 is about 1236.7065580071.

The spelling of 1891472325 in words is "one billion, eight hundred ninety-one million, four hundred seventy-two thousand, three hundred twenty-five".