919208136 has 128 divisors (see below), whose sum is σ = 2887695360. Its totient is φ = 236870400.

The previous prime is 919208123. The next prime is 919208159. The reversal of 919208136 is 631802919.

It is a junction number, because it is equal to n+sod(n) for n = 919208094 and 919208103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240190 + ... + 243986.

It is an arithmetic number, because the mean of its divisors is an integer number (22560120).

Almost surely, 2^919208136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 919208136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443847680).

919208136 is an abundant number, since it is smaller than the sum of its proper divisors (1968487224).

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

919208136 is a wasteful number, since it uses less digits than its factorization.

919208136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955 (or 3951 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 919208136 is about 30318.4454746611. The cubic root of 919208136 is about 972.3097033392.

The spelling of 919208136 in words is "nine hundred nineteen million, two hundred eight thousand, one hundred thirty-six".