1228975237 has 8 divisors (see below), whose sum is σ = 1487163456. Its totient is φ = 991442112.

The previous prime is 1228975193. The next prime is 1228975247. The reversal of 1228975237 is 7325798221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228975237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228975247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5163643 + ... + 5163880.

It is an arithmetic number, because the mean of its divisors is an integer number (185895432).

Almost surely, 2^1228975237 is an apocalyptic number.

1228975237 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1228975237 is a deficient number, since it is larger than the sum of its proper divisors (258188219).

1228975237 is a wasteful number, since it uses less digits than its factorization.

1228975237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10327547.

The product of its digits is 423360, while the sum is 46.

The square root of 1228975237 is about 35056.7431031464. The cubic root of 1228975237 is about 1071.1436332590.

The spelling of 1228975237 in words is "one billion, two hundred twenty-eight million, nine hundred seventy-five thousand, two hundred thirty-seven".