1072197161 has 8 divisors (see below), whose sum is σ = 1226279424. Its totient is φ = 918342720.

The previous prime is 1072197149. The next prime is 1072197167. The reversal of 1072197161 is 1617912701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1072197161 - 2⁶ = 1072197097 is a prime.

It is a super-2 number, since 2×1072197161² = 2299213504112919842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1072197167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46745 + ... + 65798.

It is an arithmetic number, because the mean of its divisors is an integer number (153284928).

Almost surely, 2^1072197161 is an apocalyptic number.

It is an amenable number.

1072197161 is a deficient number, since it is larger than the sum of its proper divisors (154082263).

1072197161 is a wasteful number, since it uses less digits than its factorization.

1072197161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113911.

The product of its (nonzero) digits is 5292, while the sum is 35.

The square root of 1072197161 is about 32744.4218302904. The cubic root of 1072197161 is about 1023.5087292037.

The spelling of 1072197161 in words is "one billion, seventy-two million, one hundred ninety-seven thousand, one hundred sixty-one".