1906191444 has 12 divisors (see below), whose sum is σ = 4447780064. Its totient is φ = 635397144.

The previous prime is 1906191437. The next prime is 1906191451. The reversal of 1906191444 is 4441916091.

It is an interprime number because it is at equal distance from previous prime (1906191437) and next prime (1906191451).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79424632 + ... + 79424655.

Almost surely, 2^1906191444 is an apocalyptic number.

It is an amenable number.

1906191444 is an abundant number, since it is smaller than the sum of its proper divisors (2541588620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1906191444 is a wasteful number, since it uses less digits than its factorization.

1906191444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158849294 (or 158849292 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1906191444 is about 43659.9524049214. The cubic root of 1906191444 is about 1239.9062199281.

The spelling of 1906191444 in words is "one billion, nine hundred six million, one hundred ninety-one thousand, four hundred forty-four".