2105257739 has 8 divisors (see below), whose sum is σ = 2269870512. Its totient is φ = 1941026400.

The previous prime is 2105257729. The next prime is 2105257751. The reversal of 2105257739 is 9377525012.

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

It is a cyclic number.

It is not a de Polignac number, because 2105257739 - 2¹⁶ = 2105192203 is a prime.

It is a super-2 number, since 2×2105257739² = 8864220295238784242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2105257696 and 2105257705.

It is not an unprimeable number, because it can be changed into a prime (2105257729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83837 + ... + 106014.

It is an arithmetic number, because the mean of its divisors is an integer number (283733814).

Almost surely, 2^2105257739 is an apocalyptic number.

2105257739 is a deficient number, since it is larger than the sum of its proper divisors (164612773).

2105257739 is a wasteful number, since it uses less digits than its factorization.

2105257739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190717.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 2105257739 is about 45883.0877230380. The cubic root of 2105257739 is about 1281.6469966951.

The spelling of 2105257739 in words is "two billion, one hundred five million, two hundred fifty-seven thousand, seven hundred thirty-nine".