1980966534 has 16 divisors (see below), whose sum is σ = 3979702272. Its totient is φ = 657360648.

The previous prime is 1980966523. The next prime is 1980966571. The reversal of 1980966534 is 4356690891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738934 + ... + 741609.

It is an arithmetic number, because the mean of its divisors is an integer number (248731392).

Almost surely, 2^1980966534 is an apocalyptic number.

1980966534 is an abundant number, since it is smaller than the sum of its proper divisors (1998735738).

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

1980966534 is a wasteful number, since it uses less digits than its factorization.

1980966534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480771.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 1980966534 is about 44508.0502156632. The cubic root of 1980966534 is about 1255.9115262676.

The spelling of 1980966534 in words is "one billion, nine hundred eighty million, nine hundred sixty-six thousand, five hundred thirty-four".