1229013892645 has 64 divisors (see below), whose sum is σ = 1884298530816. Its totient is φ = 747374791680.

The previous prime is 1229013892627. The next prime is 1229013892649. The reversal of 1229013892645 is 5462983109221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1229013892645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1229013892592 and 1229013892601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229013892649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2425597 + ... + 2888173.

It is an arithmetic number, because the mean of its divisors is an integer number (29442164544).

Almost surely, 2^{1229013892645} is an apocalyptic number.

It is an amenable number.

1229013892645 is a deficient number, since it is larger than the sum of its proper divisors (655284638171).

1229013892645 is a wasteful number, since it uses less digits than its factorization.

1229013892645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462770.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 1229013892645 in words is "one trillion, two hundred twenty-nine billion, thirteen million, eight hundred ninety-two thousand, six hundred forty-five".