2139906053 has 2 divisors, whose sum is σ = 2139906054. Its totient is φ = 2139906052.

The previous prime is 2139906049. The next prime is 2139906077. The reversal of 2139906053 is 3506099312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2039244964 + 100661089 = 45158^2 + 10033^2 .

It is a cyclic number.

It is not a de Polignac number, because 2139906053 - 2² = 2139906049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2139905998 and 2139906016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2139906253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069953026 + 1069953027.

It is an arithmetic number, because the mean of its divisors is an integer number (1069953027).

Almost surely, 2^2139906053 is an apocalyptic number.

It is an amenable number.

2139906053 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139906053 is an equidigital number, since it uses as much as digits as its factorization.

2139906053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 2139906053 is about 46259.1185929866. The cubic root of 2139906053 is about 1288.6398846925.

The spelling of 2139906053 in words is "two billion, one hundred thirty-nine million, nine hundred six thousand, fifty-three".