2198954042 has 4 divisors (see below), whose sum is σ = 3298431066. Its totient is φ = 1099477020.

The previous prime is 2198954033. The next prime is 2198954053. The reversal of 2198954042 is 2404598912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2015920201 + 183033841 = 44899^2 + 13529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2198953984 and 2198954002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549738509 + ... + 549738512.

Almost surely, 2^2198954042 is an apocalyptic number.

2198954042 is a deficient number, since it is larger than the sum of its proper divisors (1099477024).

2198954042 is a wasteful number, since it uses less digits than its factorization.

2198954042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099477023.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 2198954042 is about 46893.0063229049. The cubic root of 2198954042 is about 1300.3852984159.

The spelling of 2198954042 in words is "two billion, one hundred ninety-eight million, nine hundred fifty-four thousand, forty-two".