2065299381 has 6 divisors (see below), whose sum is σ = 2983210230. Its totient is φ = 1376866248.

The previous prime is 2065299377. The next prime is 2065299403. The reversal of 2065299381 is 1839925602.

It can be written as a sum of positive squares in only one way, i.e., 1879222500 + 186076881 = 43350^2 + 13641^2 .

It is not a de Polignac number, because 2065299381 - 2² = 2065299377 is a prime.

It is a super-2 number, since 2×2065299381² = 8530923066317966322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065299311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114738846 + ... + 114738863.

It is an arithmetic number, because the mean of its divisors is an integer number (497201705).

Almost surely, 2^2065299381 is an apocalyptic number.

It is an amenable number.

2065299381 is a deficient number, since it is larger than the sum of its proper divisors (917910849).

2065299381 is a wasteful number, since it uses less digits than its factorization.

2065299381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229477715 (or 229477712 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 2065299381 is about 45445.5650311447. The cubic root of 2065299381 is about 1273.4864790187.

The spelling of 2065299381 in words is "two billion, sixty-five million, two hundred ninety-nine thousand, three hundred eighty-one".