1874381689 has 4 divisors (see below), whose sum is σ = 1874574756. Its totient is φ = 1874188624.

The previous prime is 1874381687. The next prime is 1874381693. The reversal of 1874381689 is 9861834781.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1167247225 + 707134464 = 34165^2 + 26592^2 .

It is a cyclic number.

It is not a de Polignac number, because 1874381689 - 2¹ = 1874381687 is a prime.

It is a super-3 number, since 3×1874381689³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1874381681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81154 + ... + 101659.

It is an arithmetic number, because the mean of its divisors is an integer number (468643689).

Almost surely, 2^1874381689 is an apocalyptic number.

It is an amenable number.

1874381689 is a deficient number, since it is larger than the sum of its proper divisors (193067).

1874381689 is a wasteful number, since it uses less digits than its factorization.

1874381689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193066.

The product of its digits is 2322432, while the sum is 55.

The square root of 1874381689 is about 43294.1299600766. The cubic root of 1874381689 is about 1232.9704768361.

The spelling of 1874381689 in words is "one billion, eight hundred seventy-four million, three hundred eighty-one thousand, six hundred eighty-nine".