14001491820 has 48 divisors (see below), whose sum is σ = 39225489408. Its totient is φ = 3731701440.

The previous prime is 14001491783. The next prime is 14001491821. The reversal of 14001491820 is 2819410041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (14001491821) 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, 49525 + ... + 174515.

It is an arithmetic number, because the mean of its divisors is an integer number (817197696).

Almost surely, 2^14001491820 is an apocalyptic number.

14001491820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14001491820 is an abundant number, since it is smaller than the sum of its proper divisors (25223997588).

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

14001491820 is a wasteful number, since it uses less digits than its factorization.

14001491820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126870 (or 126868 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 14001491820 in words is "fourteen billion, one million, four hundred ninety-one thousand, eight hundred twenty".