1973942469 has 6 divisors (see below), whose sum is σ = 2851250246. Its totient is φ = 1315961640.

The previous prime is 1973942461. The next prime is 1973942513. The reversal of 1973942469 is 9642493791.

1973942469 is a `hidden beast` number, since 1 + 9 + 7 + 394 + 246 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1300539969 + 673402500 = 36063^2 + 25950^2 .

It is not a de Polignac number, because 1973942469 - 2³ = 1973942461 is a prime.

It is a super-2 number, since 2×1973942469² = 7792897741843631922, 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 (1973942461) 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 5 ways as a sum of consecutive naturals, for example, 109663462 + ... + 109663479.

Almost surely, 2^1973942469 is an apocalyptic number.

It is an amenable number.

1973942469 is a deficient number, since it is larger than the sum of its proper divisors (877307777).

1973942469 is a wasteful number, since it uses less digits than its factorization.

1973942469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219326947 (or 219326944 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 1973942469 is about 44429.0723400793. The cubic root of 1973942469 is about 1254.4253744136.

The spelling of 1973942469 in words is "one billion, nine hundred seventy-three million, nine hundred forty-two thousand, four hundred sixty-nine".