1871742426 has 16 divisors (see below), whose sum is σ = 3744685728. Its totient is φ = 623714000.

The previous prime is 1871742419. The next prime is 1871742437. The reversal of 1871742426 is 6242471781.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29100 + ... + 67751.

It is an arithmetic number, because the mean of its divisors is an integer number (234042858).

Almost surely, 2^1871742426 is an apocalyptic number.

1871742426 is an abundant number, since it is smaller than the sum of its proper divisors (1872943302).

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

1871742426 is a wasteful number, since it uses less digits than its factorization.

1871742426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100077.

The product of its digits is 150528, while the sum is 42.

The square root of 1871742426 is about 43263.6386125809. The cubic root of 1871742426 is about 1232.3915015709.

The spelling of 1871742426 in words is "one billion, eight hundred seventy-one million, seven hundred forty-two thousand, four hundred twenty-six".