469356987181 has 2 divisors, whose sum is σ = 469356987182. Its totient is φ = 469356987180.

The previous prime is 469356987133. The next prime is 469356987199. The reversal of 469356987181 is 181789653964.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414692209156 + 54664778025 = 643966^2 + 233805^2 .

It is a cyclic number.

It is not a de Polignac number, because 469356987181 - 2¹¹ = 469356985133 is a prime.

It is a super-2 number, since 2×469356987181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (469356987131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234678493590 + 234678493591.

It is an arithmetic number, because the mean of its divisors is an integer number (234678493591).

Almost surely, 2^469356987181 is an apocalyptic number.

It is an amenable number.

469356987181 is a deficient number, since it is larger than the sum of its proper divisors (1).

469356987181 is an equidigital number, since it uses as much as digits as its factorization.

469356987181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 67.

The spelling of 469356987181 in words is "four hundred sixty-nine billion, three hundred fifty-six million, nine hundred eighty-seven thousand, one hundred eighty-one".