2105157983 has 2 divisors, whose sum is σ = 2105157984. Its totient is φ = 2105157982.

The previous prime is 2105157979. The next prime is 2105158001. The reversal of 2105157983 is 3897515012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105157983 - 2² = 2105157979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2105157983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105154983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052578991 + 1052578992.

It is an arithmetic number, because the mean of its divisors is an integer number (1052578992).

Almost surely, 2^2105157983 is an apocalyptic number.

2105157983 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105157983 is an equidigital number, since it uses as much as digits as its factorization.

2105157983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 2105157983 is about 45882.0006429537. Note that the first 3 decimals coincide. The cubic root of 2105157983 is about 1281.6267530934.

The spelling of 2105157983 in words is "two billion, one hundred five million, one hundred fifty-seven thousand, nine hundred eighty-three".