1229545494 has 24 divisors (see below), whose sum is σ = 2762683560. Its totient is φ = 409848336.

The previous prime is 1229545487. The next prime is 1229545543. The reversal of 1229545494 is 4945459221.

1229545494 is a `hidden beast` number, since 1 + 22 + 95 + 454 + 94 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1264479 + ... + 1265450.

It is an arithmetic number, because the mean of its divisors is an integer number (115111815).

Almost surely, 2^1229545494 is an apocalyptic number.

1229545494 is an abundant number, since it is smaller than the sum of its proper divisors (1533138066).

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

1229545494 is an equidigital number, since it uses as much as digits as its factorization.

1229545494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529946 (or 2529934 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 1229545494 is about 35064.8755024169. The cubic root of 1229545494 is about 1071.3092814848.

The spelling of 1229545494 in words is "one billion, two hundred twenty-nine million, five hundred forty-five thousand, four hundred ninety-four".