1148137729 has 2 divisors, whose sum is σ = 1148137730. Its totient is φ = 1148137728.

The previous prime is 1148137717. The next prime is 1148137751. The reversal of 1148137729 is 9277318411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1080108225 + 68029504 = 32865^2 + 8248^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148137729 - 2¹³ = 1148129537 is a prime.

It is a super-4 number, since 4×1148137729⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1148137709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574068864 + 574068865.

It is an arithmetic number, because the mean of its divisors is an integer number (574068865).

Almost surely, 2^1148137729 is an apocalyptic number.

It is an amenable number.

1148137729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148137729 is an equidigital number, since it uses as much as digits as its factorization.

1148137729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 43.

The square root of 1148137729 is about 33884.1811026916. The cubic root of 1148137729 is about 1047.1237166521.

The spelling of 1148137729 in words is "one billion, one hundred forty-eight million, one hundred thirty-seven thousand, seven hundred twenty-nine".