1698426401 has 8 divisors (see below), whose sum is σ = 1955228160. Its totient is φ = 1445167008.

The previous prime is 1698426377. The next prime is 1698426409. The reversal of 1698426401 is 1046248961.

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

It is a cyclic number.

It is not a de Polignac number, because 1698426401 - 2²² = 1694232097 is a prime.

It is a super-2 number, since 2×1698426401² = 5769304479227625602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1698426409) 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 in 7 ways as a sum of consecutive naturals, for example, 884561 + ... + 886478.

It is an arithmetic number, because the mean of its divisors is an integer number (244403520).

Almost surely, 2^1698426401 is an apocalyptic number.

It is an amenable number.

1698426401 is a deficient number, since it is larger than the sum of its proper divisors (256801759).

1698426401 is a wasteful number, since it uses less digits than its factorization.

1698426401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771183.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1698426401 is about 41211.9691473242. The cubic root of 1698426401 is about 1193.1148304117.

The spelling of 1698426401 in words is "one billion, six hundred ninety-eight million, four hundred twenty-six thousand, four hundred one".