1697489042 has 8 divisors (see below), whose sum is σ = 2546729100. Its totient is φ = 848579344.

The previous prime is 1697489023. The next prime is 1697489063. The reversal of 1697489042 is 2409847961.

It can be written as a sum of positive squares in 2 ways, for example, as 1670438641 + 27050401 = 40871^2 + 5201^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69317 + ... + 90552.

Almost surely, 2^1697489042 is an apocalyptic number.

1697489042 is a deficient number, since it is larger than the sum of its proper divisors (849240058).

1697489042 is a wasteful number, since it uses less digits than its factorization.

1697489042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165180.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1697489042 is about 41200.5951656041. The cubic root of 1697489042 is about 1192.8952972543.

The spelling of 1697489042 in words is "one billion, six hundred ninety-seven million, four hundred eighty-nine thousand, forty-two".