1662040580 has 24 divisors (see below), whose sum is σ = 3673985280. Its totient is φ = 629825760.

The previous prime is 1662040543. The next prime is 1662040619. The reversal of 1662040580 is 850402661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2186516 + ... + 2187275.

It is an arithmetic number, because the mean of its divisors is an integer number (153082720).

Almost surely, 2^1662040580 is an apocalyptic number.

1662040580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662040580 is an abundant number, since it is smaller than the sum of its proper divisors (2011944700).

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

1662040580 is a wasteful number, since it uses less digits than its factorization.

1662040580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373819 (or 4373817 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1662040580 is about 40768.1319169765. The cubic root of 1662040580 is about 1184.5331185503.

The spelling of 1662040580 in words is "one billion, six hundred sixty-two million, forty thousand, five hundred eighty".