919493420844 has 24 divisors (see below), whose sum is σ = 2145500457408. Its totient is φ = 306495548560.

The previous prime is 919493420843. The next prime is 919493420863. The reversal of 919493420844 is 448024394919.

It is not an unprimeable number, because it can be changed into a prime (919493420843) 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 7 ways as a sum of consecutive naturals, for example, 2554039 + ... + 2891729.

It is an arithmetic number, because the mean of its divisors is an integer number (89395852392).

Almost surely, 2^919493420844 is an apocalyptic number.

It is an amenable number.

919493420844 is an abundant number, since it is smaller than the sum of its proper divisors (1226007036564).

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

919493420844 is a wasteful number, since it uses less digits than its factorization.

919493420844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564605 (or 564603 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 919493420844 in words is "nine hundred nineteen billion, four hundred ninety-three million, four hundred twenty thousand, eight hundred forty-four".