1689488516 has 6 divisors (see below), whose sum is σ = 2956604910. Its totient is φ = 844744256.

The previous prime is 1689488459. The next prime is 1689488539. The reversal of 1689488516 is 6158849861.

It can be written as a sum of positive squares in only one way, i.e., 1466583616 + 222904900 = 38296^2 + 14930^2 .

It is a super-3 number, since 3×1689488516³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211186061 + ... + 211186068.

It is an arithmetic number, because the mean of its divisors is an integer number (492767485).

Almost surely, 2^1689488516 is an apocalyptic number.

It is an amenable number.

1689488516 is a deficient number, since it is larger than the sum of its proper divisors (1267116394).

1689488516 is a wasteful number, since it uses less digits than its factorization.

1689488516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422372133 (or 422372131 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 56.

The square root of 1689488516 is about 41103.3881328535. The cubic root of 1689488516 is about 1191.0182457644.

The spelling of 1689488516 in words is "one billion, six hundred eighty-nine million, four hundred eighty-eight thousand, five hundred sixteen".