2052161998 has 4 divisors (see below), whose sum is σ = 3078243000. Its totient is φ = 1026080998.

The previous prime is 2052161957. The next prime is 2052162001. The reversal of 2052161998 is 8991612502.

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

It is a super-2 number, since 2×2052161998² = 8422737732070704008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513040498 + ... + 513040501.

It is an arithmetic number, because the mean of its divisors is an integer number (769560750).

Almost surely, 2^2052161998 is an apocalyptic number.

2052161998 is a deficient number, since it is larger than the sum of its proper divisors (1026081002).

2052161998 is a wasteful number, since it uses less digits than its factorization.

2052161998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026081001.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 2052161998 is about 45300.7946729414. The cubic root of 2052161998 is about 1270.7805146962.

The spelling of 2052161998 in words is "two billion, fifty-two million, one hundred sixty-one thousand, nine hundred ninety-eight".