919661072 has 40 divisors (see below), whose sum is σ = 2028352320. Its totient is φ = 399850880.

The previous prime is 919661069. The next prime is 919661089. The reversal of 919661072 is 270166919.

It is a super-3 number, since 3×919661072³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109547 + ... + 117642.

It is an arithmetic number, because the mean of its divisors is an integer number (50708808).

Almost surely, 2^919661072 is an apocalyptic number.

919661072 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

919661072 is an abundant number, since it is smaller than the sum of its proper divisors (1108691248).

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

919661072 is a wasteful number, since it uses less digits than its factorization.

919661072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227231 (or 227225 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 919661072 is about 30325.9141989158. The cubic root of 919661072 is about 972.4693776415.

The spelling of 919661072 in words is "nine hundred nineteen million, six hundred sixty-one thousand, seventy-two".