1440356148 has 192 divisors, whose sum is σ = 4678195200. Its totient is φ = 372314880.

The previous prime is 1440356147. The next prime is 1440356173. The reversal of 1440356148 is 8416530441.

1440356148 is a `hidden beast` number, since 1 + 4 + 4 + 0 + 35 + 614 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440356147) 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, 3151536 + ... + 3151992.

It is an arithmetic number, because the mean of its divisors is an integer number (24365600).

Almost surely, 2^1440356148 is an apocalyptic number.

1440356148 is a gapful number since it is divisible by the number (18) 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 1440356148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2339097600).

1440356148 is an abundant number, since it is smaller than the sum of its proper divisors (3237839052).

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

1440356148 is a wasteful number, since it uses less digits than its factorization.

1440356148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1440356148 is about 37952.0242938371. The cubic root of 1440356148 is about 1129.3363236776.

Adding to 1440356148 its reverse (8416530441), we get a palindrome (9856886589).

The spelling of 1440356148 in words is "one billion, four hundred forty million, three hundred fifty-six thousand, one hundred forty-eight".