919195420 has 48 divisors (see below), whose sum is σ = 2267784288. Its totient is φ = 308540160.

The previous prime is 919195411. The next prime is 919195427. The reversal of 919195420 is 24591919.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919195427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157839 + ... + 163558.

It is an arithmetic number, because the mean of its divisors is an integer number (47245506).

Almost surely, 2^919195420 is an apocalyptic number.

It is an amenable number.

919195420 is an abundant number, since it is smaller than the sum of its proper divisors (1348588868).

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

919195420 is a wasteful number, since it uses less digits than its factorization.

919195420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321430 (or 321428 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 919195420 is about 30318.2357666141. The cubic root of 919195420 is about 972.3052197891.

The spelling of 919195420 in words is "nine hundred nineteen million, one hundred ninety-five thousand, four hundred twenty".