1228657383 has 16 divisors (see below), whose sum is σ = 1842167040. Its totient is φ = 809234712.

The previous prime is 1228657369. The next prime is 1228657403. The reversal of 1228657383 is 3837568221.

It is a de Polignac number, because none of the positive numbers 2^k-1228657383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228650383) 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, 271891 + ... + 276372.

It is an arithmetic number, because the mean of its divisors is an integer number (115135440).

Almost surely, 2^1228657383 is an apocalyptic number.

1228657383 is a deficient number, since it is larger than the sum of its proper divisors (613509657).

1228657383 is an equidigital number, since it uses as much as digits as its factorization.

1228657383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548355 (or 548349 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1228657383 is about 35052.2093882825. The cubic root of 1228657383 is about 1071.0512808030.

The spelling of 1228657383 in words is "one billion, two hundred twenty-eight million, six hundred fifty-seven thousand, three hundred eighty-three".