1698722142 has 16 divisors (see below), whose sum is σ = 3658786320. Its totient is φ = 522683712.

The previous prime is 1698722141. The next prime is 1698722153. The reversal of 1698722142 is 2412278961.

It is a junction number, because it is equal to n+sod(n) for n = 1698722094 and 1698722103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1698722141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10889167 + ... + 10889322.

It is an arithmetic number, because the mean of its divisors is an integer number (228674145).

Almost surely, 2^1698722142 is an apocalyptic number.

1698722142 is an abundant number, since it is smaller than the sum of its proper divisors (1960064178).

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

1698722142 is a wasteful number, since it uses less digits than its factorization.

1698722142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21778507.

The product of its digits is 96768, while the sum is 42.

The square root of 1698722142 is about 41215.5570385746. The cubic root of 1698722142 is about 1193.1840773519.

The spelling of 1698722142 in words is "one billion, six hundred ninety-eight million, seven hundred twenty-two thousand, one hundred forty-two".