1891428174 has 12 divisors (see below), whose sum is σ = 4098094416. Its totient is φ = 630476052.

The previous prime is 1891428163. The next prime is 1891428223. The reversal of 1891428174 is 4718241981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52539654 + ... + 52539689.

It is an arithmetic number, because the mean of its divisors is an integer number (341507868).

Almost surely, 2^1891428174 is an apocalyptic number.

1891428174 is an abundant number, since it is smaller than the sum of its proper divisors (2206666242).

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

1891428174 is a wasteful number, since it uses less digits than its factorization.

1891428174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105079351 (or 105079348 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 1891428174 is about 43490.5526982585. The cubic root of 1891428174 is about 1236.6969354756.

The spelling of 1891428174 in words is "one billion, eight hundred ninety-one million, four hundred twenty-eight thousand, one hundred seventy-four".