1698426442 has 8 divisors (see below), whose sum is σ = 2548977156. Its totient is φ = 848767392.

The previous prime is 1698426439. The next prime is 1698426461. The reversal of 1698426442 is 2446248961.

It can be written as a sum of positive squares in 2 ways, for example, as 1199306161 + 499120281 = 34631^2 + 22341^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1698426392 and 1698426401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218133 + ... + 225784.

Almost surely, 2^1698426442 is an apocalyptic number.

1698426442 is a deficient number, since it is larger than the sum of its proper divisors (850550714).

1698426442 is a wasteful number, since it uses less digits than its factorization.

1698426442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445832.

The product of its digits is 663552, while the sum is 46.

The square root of 1698426442 is about 41211.9696447525. The cubic root of 1698426442 is about 1193.1148400123.

The spelling of 1698426442 in words is "one billion, six hundred ninety-eight million, four hundred twenty-six thousand, four hundred forty-two".