1662989650 has 48 divisors (see below), whose sum is σ = 3538523520. Its totient is φ = 569606400.

The previous prime is 1662989641. The next prime is 1662989681. The reversal of 1662989650 is 569892661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519555 + ... + 522745.

It is an arithmetic number, because the mean of its divisors is an integer number (73719240).

Almost surely, 2^1662989650 is an apocalyptic number.

1662989650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1662989650 is an abundant number, since it is smaller than the sum of its proper divisors (1875533870).

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

1662989650 is a wasteful number, since it uses less digits than its factorization.

1662989650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699 (or 4694 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 1662989650 is about 40779.7701072480. The cubic root of 1662989650 is about 1184.7585424348.

The spelling of 1662989650 in words is "one billion, six hundred sixty-two million, nine hundred eighty-nine thousand, six hundred fifty".