1154389628634 has 128 divisors (see below), whose sum is σ = 2587724236800. Its totient is φ = 343217952000.

The previous prime is 1154389628633. The next prime is 1154389628719. The reversal of 1154389628634 is 4368269834511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1154389628633) 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, 119633442 + ... + 119643090.

It is an arithmetic number, because the mean of its divisors is an integer number (20216595600).

Almost surely, 2^{1154389628634} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154389628634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1293862118400).

1154389628634 is an abundant number, since it is smaller than the sum of its proper divisors (1433334608166).

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

1154389628634 is a wasteful number, since it uses less digits than its factorization.

1154389628634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969 (or 9947 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 60.

The spelling of 1154389628634 in words is "one trillion, one hundred fifty-four billion, three hundred eighty-nine million, six hundred twenty-eight thousand, six hundred thirty-four".