9814042780 has 24 divisors (see below), whose sum is σ = 20685551040. Its totient is φ = 3911129280.

The previous prime is 9814042759. The next prime is 9814042789. The reversal of 9814042780 is 872404189.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9814042789) 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, 899935 + ... + 910774.

It is an arithmetic number, because the mean of its divisors is an integer number (861897960).

Almost surely, 2^9814042780 is an apocalyptic number.

It is an amenable number.

9814042780 is an abundant number, since it is smaller than the sum of its proper divisors (10871508260).

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

9814042780 is a wasteful number, since it uses less digits than its factorization.

9814042780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810989 (or 1810987 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 9814042780 is about 99065.8507256663. The cubic root of 9814042780 is about 2140.9966228709.

The spelling of 9814042780 in words is "nine billion, eight hundred fourteen million, forty-two thousand, seven hundred eighty".