1906542801 has 6 divisors (see below), whose sum is σ = 2753895170. Its totient is φ = 1271028528.

The previous prime is 1906542797. The next prime is 1906542823. The reversal of 1906542801 is 1082456091.

It can be written as a sum of positive squares in only one way, i.e., 1447726401 + 458816400 = 38049^2 + 21420^2 .

It is not a de Polignac number, because 1906542801 - 2² = 1906542797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1906542851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105919036 + ... + 105919053.

Almost surely, 2^1906542801 is an apocalyptic number.

It is an amenable number.

1906542801 is a deficient number, since it is larger than the sum of its proper divisors (847352369).

1906542801 is a wasteful number, since it uses less digits than its factorization.

1906542801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211838095 (or 211838092 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1906542801 is about 43663.9760099788. The cubic root of 1906542801 is about 1239.9823967758.

Adding to 1906542801 its reverse (1082456091), we get a palindrome (2988998892).

The spelling of 1906542801 in words is "one billion, nine hundred six million, five hundred forty-two thousand, eight hundred one".