1660627149 has 8 divisors (see below), whose sum is σ = 2220741120. Its totient is φ = 1103798976.

The previous prime is 1660627147. The next prime is 1660627169. The reversal of 1660627149 is 9417260661.

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

It is not a de Polignac number, because 1660627149 - 2¹ = 1660627147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1660627149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660627147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820269 + ... + 822290.

It is an arithmetic number, because the mean of its divisors is an integer number (277592640).

Almost surely, 2^1660627149 is an apocalyptic number.

It is an amenable number.

1660627149 is a deficient number, since it is larger than the sum of its proper divisors (560113971).

1660627149 is a wasteful number, since it uses less digits than its factorization.

1660627149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642899.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1660627149 is about 40750.7932315434. The cubic root of 1660627149 is about 1184.1972401365.

The spelling of 1660627149 in words is "one billion, six hundred sixty million, six hundred twenty-seven thousand, one hundred forty-nine".