919838947030 has 16 divisors (see below), whose sum is σ = 1655788333680. Its totient is φ = 367918194592.

The previous prime is 919838946989. The next prime is 919838947039. The reversal of 919838947030 is 30749838919.

It is a super-2 number, since 2×919838947030² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 919838947030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919838947039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949704 + ... + 2375083.

It is an arithmetic number, because the mean of its divisors is an integer number (103486770855).

Almost surely, 2^919838947030 is an apocalyptic number.

919838947030 is a deficient number, since it is larger than the sum of its proper divisors (735949386650).

919838947030 is a wasteful number, since it uses less digits than its factorization.

919838947030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346063.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 919838947030 in words is "nine hundred nineteen billion, eight hundred thirty-eight million, nine hundred forty-seven thousand, thirty".