1229358489450 has 768 divisors, whose sum is σ = 3962386391040. Its totient is φ = 245306880000.

The previous prime is 1229358489449. The next prime is 1229358489451. The reversal of 1229358489450 is 549848539221.

It is an interprime number because it is at equal distance from previous prime (1229358489449) and next prime (1229358489451).

It is a super-2 number, since 2×1229358489450² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1229358489451) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 7830308772 + ... + 7830308928.

It is an arithmetic number, because the mean of its divisors is an integer number (5159357280).

Almost surely, 2^{1229358489450} is an apocalyptic number.

1229358489450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1229358489450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1981193195520).

1229358489450 is an abundant number, since it is smaller than the sum of its proper divisors (2733027901590).

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

1229358489450 is a wasteful number, since it uses less digits than its factorization.

1229358489450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 1229358489450 in words is "one trillion, two hundred twenty-nine billion, three hundred fifty-eight million, four hundred eighty-nine thousand, four hundred fifty".