1148988641 has 2 divisors, whose sum is σ = 1148988642. Its totient is φ = 1148988640.

The previous prime is 1148988611. The next prime is 1148988689. The reversal of 1148988641 is 1468898411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711342241 + 437646400 = 26671^2 + 20920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148988641 - 2¹⁰ = 1148987617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1148988641.

It is not a weakly prime, because it can be changed into another prime (1148988601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574494320 + 574494321.

It is an arithmetic number, because the mean of its divisors is an integer number (574494321).

Almost surely, 2^1148988641 is an apocalyptic number.

It is an amenable number.

1148988641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148988641 is an equidigital number, since it uses as much as digits as its factorization.

1148988641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 50.

The square root of 1148988641 is about 33896.7349607599. The cubic root of 1148988641 is about 1047.3823354827.

The spelling of 1148988641 in words is "one billion, one hundred forty-eight million, nine hundred eighty-eight thousand, six hundred forty-one".