1906454093 has 4 divisors (see below), whose sum is σ = 1908269088. Its totient is φ = 1904639100.

The previous prime is 1906454087. The next prime is 1906454117. The reversal of 1906454093 is 3904546091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3904546091 = 11117 ⋅351223.

It is a cyclic number.

It is not a de Polignac number, because 1906454093 - 2⁸ = 1906453837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1906454093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906454003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905921 + ... + 908022.

It is an arithmetic number, because the mean of its divisors is an integer number (477067272).

Almost surely, 2^1906454093 is an apocalyptic number.

It is an amenable number.

1906454093 is a deficient number, since it is larger than the sum of its proper divisors (1814995).

1906454093 is a wasteful number, since it uses less digits than its factorization.

1906454093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814994.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 1906454093 is about 43662.9601951127. The cubic root of 1906454093 is about 1239.9631650955.

The spelling of 1906454093 in words is "one billion, nine hundred six million, four hundred fifty-four thousand, ninety-three".