1662380140 has 24 divisors (see below), whose sum is σ = 3514123872. Its totient is φ = 660547200.

The previous prime is 1662380123. The next prime is 1662380147. The reversal of 1662380140 is 410832661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1662380147) 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, 272209 + ... + 278248.

It is an arithmetic number, because the mean of its divisors is an integer number (146421828).

Almost surely, 2^1662380140 is an apocalyptic number.

1662380140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662380140 is an abundant number, since it is smaller than the sum of its proper divisors (1851743732).

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

1662380140 is a wasteful number, since it uses less digits than its factorization.

1662380140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550617 (or 550615 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1662380140 is about 40772.2962316326. The cubic root of 1662380140 is about 1184.6137809766.

The spelling of 1662380140 in words is "one billion, six hundred sixty-two million, three hundred eighty thousand, one hundred forty".