1906141 has 4 divisors (see below), whose sum is σ = 1971900. Its totient is φ = 1840384.

The previous prime is 1906139. The next prime is 1906153. The reversal of 1906141 is 1416091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1416091 = 1187 ⋅1193.

It can be written as a sum of positive squares in 2 ways, for example, as 1232100 + 674041 = 1110^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 1906141 - 2¹ = 1906139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32836 + ... + 32893.

It is an arithmetic number, because the mean of its divisors is an integer number (492975).

2^1906141 is an apocalyptic number.

It is an amenable number.

1906141 is a deficient number, since it is larger than the sum of its proper divisors (65759).

1906141 is an equidigital number, since it uses as much as digits as its factorization.

1906141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65758.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1906141 is about 1380.6306529988. The cubic root of 1906141 is about 123.9895282520.

The spelling of 1906141 in words is "one million, nine hundred six thousand, one hundred forty-one".