1401548820 has 48 divisors (see below), whose sum is σ = 4484957568. Its totient is φ = 320353920.

The previous prime is 1401548807. The next prime is 1401548839. The reversal of 1401548820 is 288451041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668091 + ... + 1668930.

It is an arithmetic number, because the mean of its divisors is an integer number (93436616).

Almost surely, 2^1401548820 is an apocalyptic number.

1401548820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401548820 is an abundant number, since it is smaller than the sum of its proper divisors (3083408748).

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

1401548820 is a wasteful number, since it uses less digits than its factorization.

1401548820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337040 (or 3337038 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 1401548820 is about 37437.2651244719. The cubic root of 1401548820 is about 1119.1013252378.

Adding to 1401548820 its reverse (288451041), we get a palindrome (1689999861).

It can be divided in two parts, 14015 and 48820, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 1401548820 in words is "one billion, four hundred one million, five hundred forty-eight thousand, eight hundred twenty".