1698020442 has 32 divisors (see below), whose sum is σ = 3825077760. Its totient is φ = 558252000.

The previous prime is 1698020419. The next prime is 1698020447. The reversal of 1698020442 is 2440208961.

It is a junction number, because it is equal to n+sod(n) for n = 1698020397 and 1698020406.

It is not an unprimeable number, because it can be changed into a prime (1698020447) 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 15 ways as a sum of consecutive naturals, for example, 211434 + ... + 219317.

It is an arithmetic number, because the mean of its divisors is an integer number (119533680).

Almost surely, 2^1698020442 is an apocalyptic number.

1698020442 is an abundant number, since it is smaller than the sum of its proper divisors (2127057318).

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

1698020442 is a wasteful number, since it uses less digits than its factorization.

1698020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430835 (or 430829 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1698020442 is about 41207.0435969386. The cubic root of 1698020442 is about 1193.0197631387.

The spelling of 1698020442 in words is "one billion, six hundred ninety-eight million, twenty thousand, four hundred forty-two".