1148489089638 has 32 divisors (see below), whose sum is σ = 2505912837120. Its totient is φ = 348010544160.

The previous prime is 1148489089637. The next prime is 1148489089691. The reversal of 1148489089638 is 8369809848411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148489089637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033528 + ... + 1834436.

It is an arithmetic number, because the mean of its divisors is an integer number (78309776160).

Almost surely, 2^{1148489089638} is an apocalyptic number.

1148489089638 is an abundant number, since it is smaller than the sum of its proper divisors (1357423747482).

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

1148489089638 is a wasteful number, since it uses less digits than its factorization.

1148489089638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822652.

The product of its (nonzero) digits is 95551488, while the sum is 69.

The spelling of 1148489089638 in words is "one trillion, one hundred forty-eight billion, four hundred eighty-nine million, eighty-nine thousand, six hundred thirty-eight".