1011607161 has 4 divisors (see below), whose sum is σ = 1348809552. Its totient is φ = 674404772.

The previous prime is 1011607153. The next prime is 1011607169. The reversal of 1011607161 is 1617061101.

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 an interprime number because it is at equal distance from previous prime (1011607153) and next prime (1011607169).

It is a cyclic number.

It is not a de Polignac number, because 1011607161 - 2³ = 1011607153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011607169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168601191 + ... + 168601196.

It is an arithmetic number, because the mean of its divisors is an integer number (337202388).

Almost surely, 2^1011607161 is an apocalyptic number.

It is an amenable number.

1011607161 is a deficient number, since it is larger than the sum of its proper divisors (337202391).

1011607161 is an equidigital number, since it uses as much as digits as its factorization.

1011607161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337202390.

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 1011607161 is about 31805.7724477806. The cubic root of 1011607161 is about 1003.8541798799.

Adding to 1011607161 its reverse (1617061101), we get a palindrome (2628668262).

It can be divided in two parts, 101 and 1607161, that multiplied together give a palindrome (162323261).

The spelling of 1011607161 in words is "one billion, eleven million, six hundred seven thousand, one hundred sixty-one".