919945438 has 8 divisors (see below), whose sum is σ = 1399353840. Its totient is φ = 453494160.

The previous prime is 919945417. The next prime is 919945459. The reversal of 919945438 is 834549919.

It is an interprime number because it is at equal distance from previous prime (919945417) and next prime (919945459).

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3239103 + ... + 3239386.

It is an arithmetic number, because the mean of its divisors is an integer number (174919230).

Almost surely, 2^919945438 is an apocalyptic number.

919945438 is a deficient number, since it is larger than the sum of its proper divisors (479408402).

919945438 is a wasteful number, since it uses less digits than its factorization.

919945438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478562.

The product of its digits is 1399680, while the sum is 52.

The square root of 919945438 is about 30330.6023349356. The cubic root of 919945438 is about 972.5695988853.

The spelling of 919945438 in words is "nine hundred nineteen million, nine hundred forty-five thousand, four hundred thirty-eight".