998061842 has 18 divisors (see below), whose sum is σ = 1520159349. Its totient is φ = 491458000.

The previous prime is 998061829. The next prime is 998061853. The reversal of 998061842 is 248160899.

It can be written as a sum of positive squares in 2 ways, for example, as 892157161 + 105904681 = 29869^2 + 10291^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=22339.

It is a super-2 number, since 2×998061842² = 1992254880912865928, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3976217 + ... + 3976467.

Almost surely, 2^998061842 is an apocalyptic number.

998061842 is a deficient number, since it is larger than the sum of its proper divisors (522097507).

998061842 is an frugal number, since it uses more digits than its factorization.

998061842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 998061842 is about 31592.1167698526. The cubic root of 998061842 is about 999.3535294993.

The spelling of 998061842 in words is "nine hundred ninety-eight million, sixty-one thousand, eight hundred forty-two".