1493391588444 has 288 divisors, whose sum is σ = 4624132806720. Its totient is φ = 415337932800.

The previous prime is 1493391588439. The next prime is 1493391588461. The reversal of 1493391588444 is 4448851933941.

1493391588444 is a `hidden beast` number, since 1 + 4 + 9 + 3 + 3 + 9 + 1 + 588 + 4 + 44 = 666.

It is a super-2 number, since 2×1493391588444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 99148674 + ... + 99163734.

It is an arithmetic number, because the mean of its divisors is an integer number (16056016690).

Almost surely, 2^{1493391588444} is an apocalyptic number.

1493391588444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1493391588444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2312066403360).

1493391588444 is an abundant number, since it is smaller than the sum of its proper divisors (3130741218276).

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

1493391588444 is a wasteful number, since it uses less digits than its factorization.

1493391588444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15586 (or 15571 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 1493391588444 in words is "one trillion, four hundred ninety-three billion, three hundred ninety-one million, five hundred eighty-eight thousand, four hundred forty-four".