1935208081 has 3 divisors (see below), whose sum is σ = 1935252073. Its totient is φ = 1935164090.

The previous prime is 1935208057. The next prime is 1935208097. The reversal of 1935208081 is 1808025391.

The square root of 1935208081 is 43991.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1935208081 - 2²¹ = 1933110929 is a prime.

It is a super-2 number, since 2×1935208081² = 7490060633535405122, 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 1935208081.

It is not an unprimeable number, because it can be changed into a prime (1935208001) 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 2 ways as a sum of consecutive naturals, for example, 21996 + ... + 65986.

Almost surely, 2^1935208081 is an apocalyptic number.

1935208081 is the 43991-st square number.

1935208081 is the 21996-th centered octagonal number.

It is an amenable number.

1935208081 is a deficient number, since it is larger than the sum of its proper divisors (43992).

1935208081 is an frugal number, since it uses more digits than its factorization.

1935208081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87982 (or 43991 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The cubic root of 1935208081 is about 1246.1659761790.

It can be divided in two parts, 193520 and 8081, that added together give a square (201601 = 449²).

The spelling of 1935208081 in words is "one billion, nine hundred thirty-five million, two hundred eight thousand, eighty-one".