1229858448 has 480 divisors, whose sum is σ = 4393468800. Its totient is φ = 292626432.

The previous prime is 1229858423. The next prime is 1229858473. The reversal of 1229858448 is 8448589221.

It is an interprime number because it is at equal distance from previous prime (1229858423) and next prime (1229858473).

It is a self number, because there is not a number n which added to its sum of digits gives 1229858448.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16847340 + ... + 16847412.

It is an arithmetic number, because the mean of its divisors is an integer number (9153060).

Almost surely, 2^1229858448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1229858448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196734400).

1229858448 is an abundant number, since it is smaller than the sum of its proper divisors (3163610352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1229858448 is a wasteful number, since it uses less digits than its factorization.

1229858448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 146 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 51.

The square root of 1229858448 is about 35069.3377182974. The cubic root of 1229858448 is about 1071.4001665816.

The spelling of 1229858448 in words is "one billion, two hundred twenty-nine million, eight hundred fifty-eight thousand, four hundred forty-eight".