2028171974 has 8 divisors (see below), whose sum is σ = 3043672248. Its totient is φ = 1013614560.

The previous prime is 2028171973. The next prime is 2028171979. The reversal of 2028171974 is 4791718202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2028171974² = 8226963112238113352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028171973) 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 3 ways as a sum of consecutive naturals, for example, 230312 + ... + 238955.

It is an arithmetic number, because the mean of its divisors is an integer number (380459031).

Almost surely, 2^2028171974 is an apocalyptic number.

2028171974 is a deficient number, since it is larger than the sum of its proper divisors (1015500274).

2028171974 is a wasteful number, since it uses less digits than its factorization.

2028171974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471430.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 2028171974 is about 45035.2303646823. The cubic root of 2028171974 is about 1265.8092327195.

The spelling of 2028171974 in words is "two billion, twenty-eight million, one hundred seventy-one thousand, nine hundred seventy-four".