2136730381 has 2 divisors, whose sum is σ = 2136730382. Its totient is φ = 2136730380.

The previous prime is 2136730373. The next prime is 2136730451. The reversal of 2136730381 is 1830376312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328238025 + 808492356 = 36445^2 + 28434^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136730381 - 2³ = 2136730373 is a prime.

It is a super-2 number, since 2×2136730381² = 9131233442176810322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2136730331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068365190 + 1068365191.

It is an arithmetic number, because the mean of its divisors is an integer number (1068365191).

Almost surely, 2^2136730381 is an apocalyptic number.

It is an amenable number.

2136730381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136730381 is an equidigital number, since it uses as much as digits as its factorization.

2136730381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2136730381 is about 46224.7810270638. The cubic root of 2136730381 is about 1288.0021115808.

The spelling of 2136730381 in words is "two billion, one hundred thirty-six million, seven hundred thirty thousand, three hundred eighty-one".