1669739152 has 20 divisors (see below), whose sum is σ = 3405389680. Its totient is φ = 790928928.

The previous prime is 1669739131. The next prime is 1669739179. The reversal of 1669739152 is 2519379661.

It is a junction number, because it is equal to n+sod(n) for n = 1669739096 and 1669739105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2745978 + ... + 2746585.

It is an arithmetic number, because the mean of its divisors is an integer number (170269484).

Almost surely, 2^1669739152 is an apocalyptic number.

It is an amenable number.

1669739152 is an abundant number, since it is smaller than the sum of its proper divisors (1735650528).

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

1669739152 is a wasteful number, since it uses less digits than its factorization.

1669739152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492590 (or 5492584 counting only the distinct ones).

The product of its digits is 612360, while the sum is 49.

The square root of 1669739152 is about 40862.4418262051. The cubic root of 1669739152 is about 1186.3592210865.

The spelling of 1669739152 in words is "one billion, six hundred sixty-nine million, seven hundred thirty-nine thousand, one hundred fifty-two".