1894434853 has 2 divisors, whose sum is σ = 1894434854. Its totient is φ = 1894434852.

The previous prime is 1894434791. The next prime is 1894434869. The reversal of 1894434853 is 3584344981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 985834404 + 908600449 = 31398^2 + 30143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1894434853 - 2⁹ = 1894434341 is a prime.

It is a super-2 number, since 2×1894434853² = 7177766824522263218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1894434797 and 1894434806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1894432853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 947217426 + 947217427.

It is an arithmetic number, because the mean of its divisors is an integer number (947217427).

Almost surely, 2^1894434853 is an apocalyptic number.

It is an amenable number.

1894434853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1894434853 is an equidigital number, since it uses as much as digits as its factorization.

1894434853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 49.

The square root of 1894434853 is about 43525.1060079123. The cubic root of 1894434853 is about 1237.3518871540.

The spelling of 1894434853 in words is "one billion, eight hundred ninety-four million, four hundred thirty-four thousand, eight hundred fifty-three".