1161067651 has 4 divisors (see below), whose sum is σ = 1161142432. Its totient is φ = 1160992872.

The previous prime is 1161067631. The next prime is 1161067679. The reversal of 1161067651 is 1567601611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1567601611 = 241 ⋅6504571.

It is a cyclic number.

It is not a de Polignac number, because 1161067651 - 2¹¹ = 1161065603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161067601) 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, 4395 + ... + 48388.

It is an arithmetic number, because the mean of its divisors is an integer number (290285608).

Almost surely, 2^1161067651 is an apocalyptic number.

1161067651 is a deficient number, since it is larger than the sum of its proper divisors (74781).

1161067651 is an equidigital number, since it uses as much as digits as its factorization.

1161067651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74780.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 1161067651 is about 34074.4427834117. The cubic root of 1161067651 is about 1051.0398318782.

The spelling of 1161067651 in words is "one billion, one hundred sixty-one million, sixty-seven thousand, six hundred fifty-one".