1660423648 has 36 divisors (see below), whose sum is σ = 3539771928. Its totient is φ = 766346880.

The previous prime is 1660423631. The next prime is 1660423651. The reversal of 1660423648 is 8463240661.

It is a super-3 number, since 3×1660423648³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1660423648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148108 + ... + 158923.

It is an arithmetic number, because the mean of its divisors is an integer number (98326998).

Almost surely, 2^1660423648 is an apocalyptic number.

It is an amenable number.

1660423648 is an abundant number, since it is smaller than the sum of its proper divisors (1879348280).

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

1660423648 is a wasteful number, since it uses less digits than its factorization.

1660423648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307067 (or 307046 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 1660423648 is about 40748.2962588622. The cubic root of 1660423648 is about 1184.1488658085.

The spelling of 1660423648 in words is "one billion, six hundred sixty million, four hundred twenty-three thousand, six hundred forty-eight".