1660157018 has 16 divisors (see below), whose sum is σ = 2685366600. Its totient is φ = 765205056.

The previous prime is 1660157011. The next prime is 1660157027. The reversal of 1660157018 is 8107510661.

It can be written as a sum of positive squares in 4 ways, for example, as 1260037009 + 400120009 = 35497^2 + 20003^2 .

It is a super-2 number, since 2×1660157018² = 5512242648829304648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660157011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22493 + ... + 61856.

Almost surely, 2^1660157018 is an apocalyptic number.

1660157018 is a deficient number, since it is larger than the sum of its proper divisors (1025209582).

1660157018 is a wasteful number, since it uses less digits than its factorization.

1660157018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85121.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 1660157018 is about 40745.0244569812. The cubic root of 1660157018 is about 1184.0854790711.

Adding to 1660157018 its reverse (8107510661), we get a palindrome (9767667679).

The spelling of 1660157018 in words is "one billion, six hundred sixty million, one hundred fifty-seven thousand, eighteen".