1669947950 has 24 divisors (see below), whose sum is σ = 3388477320. Its totient is φ = 607253600.

The previous prime is 1669947947. The next prime is 1669947967. The reversal of 1669947950 is 597499661.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1517585 + ... + 1518684.

It is an arithmetic number, because the mean of its divisors is an integer number (141186555).

Almost surely, 2^1669947950 is an apocalyptic number.

1669947950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669947950 is an abundant number, since it is smaller than the sum of its proper divisors (1718529370).

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

1669947950 is a wasteful number, since it uses less digits than its factorization.

1669947950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036292 (or 3036287 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 1669947950 is about 40864.9966352623. The cubic root of 1669947950 is about 1186.4086697499.

The spelling of 1669947950 in words is "one billion, six hundred sixty-nine million, nine hundred forty-seven thousand, nine hundred fifty".