1894434797 has 4 divisors (see below), whose sum is σ = 2005872156. Its totient is φ = 1782997440.

The previous prime is 1894434791. The next prime is 1894434853. The reversal of 1894434797 is 7974344981.

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 1317762601 + 576672196 = 36301^2 + 24014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1894434797 - 2⁶ = 1894434733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894434791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55718654 + ... + 55718687.

It is an arithmetic number, because the mean of its divisors is an integer number (501468039).

Almost surely, 2^1894434797 is an apocalyptic number.

1894434797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1894434797 is a deficient number, since it is larger than the sum of its proper divisors (111437359).

1894434797 is a wasteful number, since it uses less digits than its factorization.

1894434797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111437358.

The product of its digits is 6096384, while the sum is 56.

The square root of 1894434797 is about 43525.1053646054. The cubic root of 1894434797 is about 1237.3518749618.

The spelling of 1894434797 in words is "one billion, eight hundred ninety-four million, four hundred thirty-four thousand, seven hundred ninety-seven".