2028395901 has 16 divisors (see below), whose sum is σ = 3253568000. Its totient is φ = 1098078768.

The previous prime is 2028395881. The next prime is 2028395903. The reversal of 2028395901 is 1095938202.

It is not a de Polignac number, because 2028395901 - 2⁷ = 2028395773 is a prime.

It is a super-2 number, since 2×2028395901² = 8228779862387203602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2028395901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028395903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541451 + ... + 2542248.

It is an arithmetic number, because the mean of its divisors is an integer number (203348000).

Almost surely, 2^2028395901 is an apocalyptic number.

2028395901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2028395901 is a deficient number, since it is larger than the sum of its proper divisors (1225172099).

2028395901 is a wasteful number, since it uses less digits than its factorization.

2028395901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083728.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 2028395901 is about 45037.7164274567. The cubic root of 2028395901 is about 1265.8558162828.

The spelling of 2028395901 in words is "two billion, twenty-eight million, three hundred ninety-five thousand, nine hundred one".