1148978673 has 6 divisors (see below), whose sum is σ = 1659635874. Its totient is φ = 765985776.

The previous prime is 1148978671. The next prime is 1148978681. The reversal of 1148978673 is 3768798411.

1148978673 is a `hidden beast` number, since 11 + 489 + 7 + 86 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 625850289 + 523128384 = 25017^2 + 22872^2 .

It is not a de Polignac number, because 1148978673 - 2¹ = 1148978671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1148978671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63832140 + ... + 63832157.

It is an arithmetic number, because the mean of its divisors is an integer number (276605979).

Almost surely, 2^1148978673 is an apocalyptic number.

It is an amenable number.

1148978673 is a deficient number, since it is larger than the sum of its proper divisors (510657201).

1148978673 is a wasteful number, since it uses less digits than its factorization.

1148978673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127664303 (or 127664300 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 1148978673 is about 33896.5879256305. The cubic root of 1148978673 is about 1047.3793066343.

The spelling of 1148978673 in words is "one billion, one hundred forty-eight million, nine hundred seventy-eight thousand, six hundred seventy-three".