1660941040 has 40 divisors (see below), whose sum is σ = 4212752688. Its totient is φ = 603978240.

The previous prime is 1660940969. The next prime is 1660941043. The reversal of 1660941040 is 401490661.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1660940993 and 1660941011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660941043) 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, 942837 + ... + 944596.

Almost surely, 2^1660941040 is an apocalyptic number.

1660941040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660941040 is an abundant number, since it is smaller than the sum of its proper divisors (2551811648).

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

1660941040 is a wasteful number, since it uses less digits than its factorization.

1660941040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887457 (or 1887451 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1660941040 is about 40754.6443979088. The cubic root of 1660941040 is about 1184.2718475800.

The spelling of 1660941040 in words is "one billion, six hundred sixty million, nine hundred forty-one thousand, forty".