1669502394 has 32 divisors (see below), whose sum is σ = 4240007040. Its totient is φ = 477000576.

The previous prime is 1669502371. The next prime is 1669502407. The reversal of 1669502394 is 4932059661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207959 + ... + 2208714.

It is an arithmetic number, because the mean of its divisors is an integer number (132500220).

Almost surely, 2^1669502394 is an apocalyptic number.

1669502394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1669502394 is an abundant number, since it is smaller than the sum of its proper divisors (2570504646).

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

1669502394 is a wasteful number, since it uses less digits than its factorization.

1669502394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416691 (or 4416685 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1669502394 is about 40859.5447111198. The cubic root of 1669502394 is about 1186.3031457981.

The spelling of 1669502394 in words is "one billion, six hundred sixty-nine million, five hundred two thousand, three hundred ninety-four".