1906769438 has 24 divisors (see below), whose sum is σ = 3369247200. Its totient is φ = 806839488.

The previous prime is 1906769413. The next prime is 1906769443. The reversal of 1906769438 is 8349676091.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1906769438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115403 + ... + 130886.

It is an arithmetic number, because the mean of its divisors is an integer number (140385300).

Almost surely, 2^1906769438 is an apocalyptic number.

1906769438 is a deficient number, since it is larger than the sum of its proper divisors (1462477762).

1906769438 is a wasteful number, since it uses less digits than its factorization.

1906769438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246384 (or 246377 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 1906769438 is about 43666.5711729236. The cubic root of 1906769438 is about 1240.0315284214.

The spelling of 1906769438 in words is "one billion, nine hundred six million, seven hundred sixty-nine thousand, four hundred thirty-eight".