1228962638 has 16 divisors (see below), whose sum is σ = 1912157280. Its totient is φ = 591691296.

The previous prime is 1228962619. The next prime is 1228962653. The reversal of 1228962638 is 8362698221.

It is a junction number, because it is equal to n+sod(n) for n = 1228962592 and 1228962601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6770 + ... + 50037.

It is an arithmetic number, because the mean of its divisors is an integer number (119509830).

Almost surely, 2^1228962638 is an apocalyptic number.

1228962638 is a deficient number, since it is larger than the sum of its proper divisors (683194642).

1228962638 is a wasteful number, since it uses less digits than its factorization.

1228962638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57211.

The product of its digits is 497664, while the sum is 47.

The square root of 1228962638 is about 35056.5634082977. The cubic root of 1228962638 is about 1071.1399729236.

The spelling of 1228962638 in words is "one billion, two hundred twenty-eight million, nine hundred sixty-two thousand, six hundred thirty-eight".