1161214651 has 2 divisors, whose sum is σ = 1161214652. Its totient is φ = 1161214650.

The previous prime is 1161214643. The next prime is 1161214661. The reversal of 1161214651 is 1564121611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161214651 - 2³ = 1161214643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161214661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580607325 + 580607326.

It is an arithmetic number, because the mean of its divisors is an integer number (580607326).

Almost surely, 2^1161214651 is an apocalyptic number.

1161214651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161214651 is an equidigital number, since it uses as much as digits as its factorization.

1161214651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 1161214651 is about 34076.5997570180. The cubic root of 1161214651 is about 1051.0841865533.

The spelling of 1161214651 in words is "one billion, one hundred sixty-one million, two hundred fourteen thousand, six hundred fifty-one".