1906125722 has 4 divisors (see below), whose sum is σ = 2859188586. Its totient is φ = 953062860.

The previous prime is 1906125721. The next prime is 1906125751. The reversal of 1906125722 is 2275216091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2275216091 = 47 ⋅48408853.

It can be written as a sum of positive squares in only one way, i.e., 1712387161 + 193738561 = 41381^2 + 13919^2 .

It is not an unprimeable number, because it can be changed into a prime (1906125721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476531429 + ... + 476531432.

Almost surely, 2^1906125722 is an apocalyptic number.

1906125722 is a deficient number, since it is larger than the sum of its proper divisors (953062864).

1906125722 is an equidigital number, since it uses as much as digits as its factorization.

1906125722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953062863.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1906125722 is about 43659.1997407190. The cubic root of 1906125722 is about 1239.8919698636.

The spelling of 1906125722 in words is "one billion, nine hundred six million, one hundred twenty-five thousand, seven hundred twenty-two".