1548133973 has 2 divisors, whose sum is σ = 1548133974. Its totient is φ = 1548133972.

The previous prime is 1548133967. The next prime is 1548133991. The reversal of 1548133973 is 3793318451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 875094724 + 673039249 = 29582^2 + 25943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548133973 - 2¹⁴ = 1548117589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1548133943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774066986 + 774066987.

It is an arithmetic number, because the mean of its divisors is an integer number (774066987).

Almost surely, 2^1548133973 is an apocalyptic number.

1548133973 is the 21032-nd centered heptagonal number.

It is an amenable number.

1548133973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1548133973 is an equidigital number, since it uses as much as digits as its factorization.

1548133973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 1548133973 is about 39346.3336665565. Note that the first 3 decimals coincide. The cubic root of 1548133973 is about 1156.8299229552.

The spelling of 1548133973 in words is "one billion, five hundred forty-eight million, one hundred thirty-three thousand, nine hundred seventy-three".