1890448343 has 16 divisors (see below), whose sum is σ = 2197638144. Its totient is φ = 1592680320.

The previous prime is 1890448333. The next prime is 1890448387. The reversal of 1890448343 is 3438440981.

It is not a de Polignac number, because 1890448343 - 2⁶ = 1890448279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1890448294 and 1890448303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890448333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161846 + ... + 173132.

It is an arithmetic number, because the mean of its divisors is an integer number (137352384).

Almost surely, 2^1890448343 is an apocalyptic number.

1890448343 is a deficient number, since it is larger than the sum of its proper divisors (307189801).

1890448343 is a wasteful number, since it uses less digits than its factorization.

1890448343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11702.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 1890448343 is about 43479.2863671887. The cubic root of 1890448343 is about 1236.4833467324.

The spelling of 1890448343 in words is "one billion, eight hundred ninety million, four hundred forty-eight thousand, three hundred forty-three".