1871426478 has 32 divisors (see below), whose sum is σ = 3933426816. Its totient is φ = 592831008.

The previous prime is 1871426461. The next prime is 1871426483. The reversal of 1871426478 is 8746241781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88476 + ... + 107567.

It is an arithmetic number, because the mean of its divisors is an integer number (122919588).

Almost surely, 2^1871426478 is an apocalyptic number.

1871426478 is an abundant number, since it is smaller than the sum of its proper divisors (2062000338).

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

1871426478 is a wasteful number, since it uses less digits than its factorization.

1871426478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196128.

The product of its digits is 602112, while the sum is 48.

The square root of 1871426478 is about 43259.9870318982. The cubic root of 1871426478 is about 1232.3221555727.

The spelling of 1871426478 in words is "one billion, eight hundred seventy-one million, four hundred twenty-six thousand, four hundred seventy-eight".