1660157011 has 2 divisors, whose sum is σ = 1660157012. Its totient is φ = 1660157010.

The previous prime is 1660156973. The next prime is 1660157027. The reversal of 1660157011 is 1107510661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1660157011 - 2¹⁵ = 1660124243 is a prime.

It is a super-2 number, since 2×1660157011² = 5512242602344908242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1660157041) 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 as a sum of consecutive naturals, namely, 830078505 + 830078506.

It is an arithmetic number, because the mean of its divisors is an integer number (830078506).

Almost surely, 2^1660157011 is an apocalyptic number.

1660157011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660157011 is an equidigital number, since it uses as much as digits as its factorization.

1660157011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1660157011 is about 40745.0243710812. The cubic root of 1660157011 is about 1184.0854774069.

Adding to 1660157011 its reverse (1107510661), we get a palindrome (2767667672).

The spelling of 1660157011 in words is "one billion, six hundred sixty million, one hundred fifty-seven thousand, eleven".