1980017534 has 32 divisors (see below), whose sum is σ = 3282253920. Its totient is φ = 888336000.

The previous prime is 1980017497. The next prime is 1980017587. The reversal of 1980017534 is 4357100891.

It is a congruent number.

It is an unprimeable number.

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, 827612 + ... + 830000.

It is an arithmetic number, because the mean of its divisors is an integer number (102570435).

Almost surely, 2^1980017534 is an apocalyptic number.

1980017534 is a deficient number, since it is larger than the sum of its proper divisors (1302236386).

1980017534 is a wasteful number, since it uses less digits than its factorization.

1980017534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1980017534 is about 44497.3879458109. The cubic root of 1980017534 is about 1255.7109422947.

The spelling of 1980017534 in words is "one billion, nine hundred eighty million, seventeen thousand, five hundred thirty-four".