8921782734 has 16 divisors (see below), whose sum is σ = 17877689472. Its totient is φ = 2968240248.

The previous prime is 8921782711. The next prime is 8921782739. The reversal of 8921782734 is 4372871298.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921782739) 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, 1418434 + ... + 1424709.

It is an arithmetic number, because the mean of its divisors is an integer number (1117355592).

Almost surely, 2^8921782734 is an apocalyptic number.

8921782734 is an abundant number, since it is smaller than the sum of its proper divisors (8955906738).

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

8921782734 is a wasteful number, since it uses less digits than its factorization.

8921782734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843671.

The product of its digits is 1354752, while the sum is 51.

The square root of 8921782734 is about 94455.1890263314. The cubic root of 8921782734 is about 2074.0404124722.

The spelling of 8921782734 in words is "eight billion, nine hundred twenty-one million, seven hundred eighty-two thousand, seven hundred thirty-four".