1660417995 has 16 divisors (see below), whose sum is σ = 2660021280. Its totient is φ = 884438784.

The previous prime is 1660417981. The next prime is 1660418003. The reversal of 1660417995 is 5997140661.

It is a happy number.

It is not a de Polignac number, because 1660417995 - 2⁵ = 1660417963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57490 + ... + 81399.

It is an arithmetic number, because the mean of its divisors is an integer number (166251330).

Almost surely, 2^1660417995 is an apocalyptic number.

1660417995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1660417995 is a deficient number, since it is larger than the sum of its proper divisors (999603285).

1660417995 is a wasteful number, since it uses less digits than its factorization.

1660417995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139694.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 1660417995 is about 40748.2268939398. The cubic root of 1660417995 is about 1184.1475219746.

The spelling of 1660417995 in words is "one billion, six hundred sixty million, four hundred seventeen thousand, nine hundred ninety-five".