1894374469 has 8 divisors (see below), whose sum is σ = 2047464440. Its totient is φ = 1742337216.

The previous prime is 1894374463. The next prime is 1894374479. The reversal of 1894374469 is 9644734981.

It can be written as a sum of positive squares in 4 ways, for example, as 13417569 + 1880956900 = 3663^2 + 43370^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1894374469 - 2⁷ = 1894374341 is a prime.

It is a super-2 number, since 2×1894374469² = 7177309257598063922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894374463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259434 + ... + 266635.

It is an arithmetic number, because the mean of its divisors is an integer number (255933055).

Almost surely, 2^1894374469 is an apocalyptic number.

It is an amenable number.

1894374469 is a deficient number, since it is larger than the sum of its proper divisors (153089971).

1894374469 is a wasteful number, since it uses less digits than its factorization.

1894374469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526359.

The product of its digits is 5225472, while the sum is 55.

The square root of 1894374469 is about 43524.4123337697. The cubic root of 1894374469 is about 1237.3387403923.

The spelling of 1894374469 in words is "one billion, eight hundred ninety-four million, three hundred seventy-four thousand, four hundred sixty-nine".