1906734136381 has 2 divisors, whose sum is σ = 1906734136382. Its totient is φ = 1906734136380.

The previous prime is 1906734136361. The next prime is 1906734136399. The reversal of 1906734136381 is 1836314376091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1760836111225 + 145898025156 = 1326965^2 + 381966^2 .

It is a cyclic number.

It is not a de Polignac number, because 1906734136381 - 2¹⁹ = 1906733612093 is a prime.

It is a super-2 number, since 2×1906734136381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1906734136361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953367068190 + 953367068191.

It is an arithmetic number, because the mean of its divisors is an integer number (953367068191).

Almost surely, 2^{1906734136381} is an apocalyptic number.

It is an amenable number.

1906734136381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906734136381 is an equidigital number, since it uses as much as digits as its factorization.

1906734136381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 1906734136381 in words is "one trillion, nine hundred six billion, seven hundred thirty-four million, one hundred thirty-six thousand, three hundred eighty-one".