1669459272 has 32 divisors (see below), whose sum is σ = 4494698880. Its totient is φ = 513679680.

The previous prime is 1669459271. The next prime is 1669459273. The reversal of 1669459272 is 2729549661.

It is an interprime number because it is at equal distance from previous prime (1669459271) and next prime (1669459273).

It is not an unprimeable number, because it can be changed into a prime (1669459271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675104 + ... + 2675727.

It is an arithmetic number, because the mean of its divisors is an integer number (140459340).

Almost surely, 2^1669459272 is an apocalyptic number.

1669459272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1669459272 is an abundant number, since it is smaller than the sum of its proper divisors (2825239608).

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

1669459272 is a wasteful number, since it uses less digits than its factorization.

1669459272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5350853 (or 5350849 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 1669459272 is about 40859.0170219500. The cubic root of 1669459272 is about 1186.2929319354.

The spelling of 1669459272 in words is "one billion, six hundred sixty-nine million, four hundred fifty-nine thousand, two hundred seventy-two".