1148243397 has 16 divisors (see below), whose sum is σ = 1841794560. Its totient is φ = 621605232.

The previous prime is 1148243381. The next prime is 1148243419. The reversal of 1148243397 is 7933428411.

It is not a de Polignac number, because 1148243397 - 2⁴ = 1148243381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148242397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438503 + ... + 1439300.

It is an arithmetic number, because the mean of its divisors is an integer number (115112160).

Almost surely, 2^1148243397 is an apocalyptic number.

It is an amenable number.

1148243397 is a deficient number, since it is larger than the sum of its proper divisors (693551163).

1148243397 is a wasteful number, since it uses less digits than its factorization.

1148243397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877832.

The product of its digits is 145152, while the sum is 42.

The square root of 1148243397 is about 33885.7403194913. The cubic root of 1148243397 is about 1047.1558394169.

The spelling of 1148243397 in words is "one billion, one hundred forty-eight million, two hundred forty-three thousand, three hundred ninety-seven".