1660413658 has 16 divisors (see below), whose sum is σ = 2513276640. Its totient is φ = 822677616.

The previous prime is 1660413611. The next prime is 1660413659. The reversal of 1660413658 is 8563140661.

It is a self number, because there is not a number n which added to its sum of digits gives 1660413658.

It is not an unprimeable number, because it can be changed into a prime (1660413659) 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, 149485 + ... + 160207.

It is an arithmetic number, because the mean of its divisors is an integer number (157079790).

Almost surely, 2^1660413658 is an apocalyptic number.

1660413658 is a deficient number, since it is larger than the sum of its proper divisors (852862982).

1660413658 is a wasteful number, since it uses less digits than its factorization.

1660413658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11421.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1660413658 is about 40748.1736768656. The cubic root of 1660413658 is about 1184.1464909787.

The spelling of 1660413658 in words is "one billion, six hundred sixty million, four hundred thirteen thousand, six hundred fifty-eight".