1698428646 has 24 divisors (see below), whose sum is σ = 3712498920. Its totient is φ = 561132096.

The previous prime is 1698428603. The next prime is 1698428653. The reversal of 1698428646 is 6468248961.

It is a junction number, because it is equal to n+sod(n) for n = 1698428592 and 1698428601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415476 + ... + 419543.

It is an arithmetic number, because the mean of its divisors is an integer number (154687455).

Almost surely, 2^1698428646 is an apocalyptic number.

1698428646 is an abundant number, since it is smaller than the sum of its proper divisors (2014070274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1698428646 is a wasteful number, since it uses less digits than its factorization.

1698428646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835140 (or 835137 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 1698428646 is about 41211.9963845480. The cubic root of 1698428646 is about 1193.1153561025.

The spelling of 1698428646 in words is "one billion, six hundred ninety-eight million, four hundred twenty-eight thousand, six hundred forty-six".