1010156161 has 4 divisors (see below), whose sum is σ = 1154464192. Its totient is φ = 865848132.

The previous prime is 1010156153. The next prime is 1010156183. The reversal of 1010156161 is 1616510101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1010156161 - 2³ = 1010156153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1010156461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72154005 + ... + 72154018.

It is an arithmetic number, because the mean of its divisors is an integer number (288616048).

Almost surely, 2^1010156161 is an apocalyptic number.

It is an amenable number.

1010156161 is a deficient number, since it is larger than the sum of its proper divisors (144308031).

1010156161 is an equidigital number, since it uses as much as digits as its factorization.

1010156161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144308030.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 1010156161 is about 31782.9539376062. The cubic root of 1010156161 is about 1003.3739903859.

Adding to 1010156161 its reverse (1616510101), we get a palindrome (2626666262).

The spelling of 1010156161 in words is "one billion, ten million, one hundred fifty-six thousand, one hundred sixty-one".