1906326645 has 32 divisors (see below), whose sum is σ = 3076444800. Its totient is φ = 1007973120.

The previous prime is 1906326589. The next prime is 1906326673. The reversal of 1906326645 is 5466236091.

It is not a de Polignac number, because 1906326645 - 2⁶ = 1906326581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1906326597 and 1906326606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 977131 + ... + 979079.

It is an arithmetic number, because the mean of its divisors is an integer number (96138900).

Almost surely, 2^1906326645 is an apocalyptic number.

1906326645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1906326645 is a deficient number, since it is larger than the sum of its proper divisors (1170118155).

1906326645 is a wasteful number, since it uses less digits than its factorization.

1906326645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 1906326645 is about 43661.5007185965. The cubic root of 1906326645 is about 1239.9355336326.

The spelling of 1906326645 in words is "one billion, nine hundred six million, three hundred twenty-six thousand, six hundred forty-five".