1148657197 has 2 divisors, whose sum is σ = 1148657198. Its totient is φ = 1148657196.

The previous prime is 1148657149. The next prime is 1148657221. The reversal of 1148657197 is 7917568411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1074593961 + 74063236 = 32781^2 + 8606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1148657197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1148657197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1148657297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574328598 + 574328599.

It is an arithmetic number, because the mean of its divisors is an integer number (574328599).

Almost surely, 2^1148657197 is an apocalyptic number.

It is an amenable number.

1148657197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148657197 is an equidigital number, since it uses as much as digits as its factorization.

1148657197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 49.

The square root of 1148657197 is about 33891.8455826767. The cubic root of 1148657197 is about 1047.2816144474.

The spelling of 1148657197 in words is "one billion, one hundred forty-eight million, six hundred fifty-seven thousand, one hundred ninety-seven".