1660988938 has 8 divisors (see below), whose sum is σ = 2847409632. Its totient is φ = 711852396.

The previous prime is 1660988899. The next prime is 1660988969. The reversal of 1660988938 is 8398890661.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 59321020 + ... + 59321047.

It is an arithmetic number, because the mean of its divisors is an integer number (355926204).

Almost surely, 2^1660988938 is an apocalyptic number.

1660988938 is a deficient number, since it is larger than the sum of its proper divisors (1186420694).

1660988938 is a wasteful number, since it uses less digits than its factorization.

1660988938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118642076.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The square root of 1660988938 is about 40755.2320322189. The cubic root of 1660988938 is about 1184.2832314293.

The spelling of 1660988938 in words is "one billion, six hundred sixty million, nine hundred eighty-eight thousand, nine hundred thirty-eight".