1229494464 has 168 divisors, whose sum is σ = 3987442368. Its totient is φ = 372522240.

The previous prime is 1229494457. The next prime is 1229494489. The reversal of 1229494464 is 4644949221.

1229494464 is a `hidden beast` number, since 12 + 2 + 94 + 94 + 464 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167479 + ... + 174665.

It is an arithmetic number, because the mean of its divisors is an integer number (23734776).

Almost surely, 2^1229494464 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 1229494464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1993721184).

1229494464 is an abundant number, since it is smaller than the sum of its proper divisors (2757947904).

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

1229494464 is an equidigital number, since it uses as much as digits as its factorization.

1229494464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7225 (or 7203 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 1229494464 is about 35064.1478436308. The cubic root of 1229494464 is about 1071.2944603797.

The spelling of 1229494464 in words is "one billion, two hundred twenty-nine million, four hundred ninety-four thousand, four hundred sixty-four".