1697900452 has 6 divisors (see below), whose sum is σ = 2971325798. Its totient is φ = 848950224.

The previous prime is 1697900441. The next prime is 1697900453. The reversal of 1697900452 is 2540097961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1342049956 + 355850496 = 36634^2 + 18864^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1697900399 and 1697900408.

It is not an unprimeable number, because it can be changed into a prime (1697900453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212237553 + ... + 212237560.

Almost surely, 2^1697900452 is an apocalyptic number.

It is an amenable number.

1697900452 is a deficient number, since it is larger than the sum of its proper divisors (1273425346).

1697900452 is a wasteful number, since it uses less digits than its factorization.

1697900452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424475117 (or 424475115 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1697900452 is about 41205.5876308056. The cubic root of 1697900452 is about 1192.9916610401.

The spelling of 1697900452 in words is "one billion, six hundred ninety-seven million, nine hundred thousand, four hundred fifty-two".