1149988141 has 2 divisors, whose sum is σ = 1149988142. Its totient is φ = 1149988140.

The previous prime is 1149988111. The next prime is 1149988187. The reversal of 1149988141 is 1418899411.

It is a happy number.

It is an a-pointer prime, because the next prime (1149988187) can be obtained adding 1149988141 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966277225 + 183710916 = 31085^2 + 13554^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149988141 - 2¹¹ = 1149986093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1149988091 and 1149988100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149988111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574994070 + 574994071.

It is an arithmetic number, because the mean of its divisors is an integer number (574994071).

Almost surely, 2^1149988141 is an apocalyptic number.

1149988141 is the 21448-th centered pentagonal number.

It is an amenable number.

1149988141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149988141 is an equidigital number, since it uses as much as digits as its factorization.

1149988141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 46.

The square root of 1149988141 is about 33911.4750637598. The cubic root of 1149988141 is about 1047.6859518403.

The spelling of 1149988141 in words is "one billion, one hundred forty-nine million, nine hundred eighty-eight thousand, one hundred forty-one".