1689969654 has 12 divisors (see below), whose sum is σ = 3661600956. Its totient is φ = 563323212.

The previous prime is 1689969653. The next prime is 1689969661. The reversal of 1689969654 is 4569699861.

It is a junction number, because it is equal to n+sod(n) for n = 1689969591 and 1689969600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689969653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46943584 + ... + 46943619.

It is an arithmetic number, because the mean of its divisors is an integer number (305133413).

Almost surely, 2^1689969654 is an apocalyptic number.

1689969654 is an abundant number, since it is smaller than the sum of its proper divisors (1971631302).

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

1689969654 is a wasteful number, since it uses less digits than its factorization.

1689969654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93887211 (or 93887208 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The square root of 1689969654 is about 41109.2404940787. The cubic root of 1689969654 is about 1191.1312957087.

The spelling of 1689969654 in words is "one billion, six hundred eighty-nine million, nine hundred sixty-nine thousand, six hundred fifty-four".