14891851920 has 640 divisors, whose sum is σ = 55973560320. Its totient is φ = 3234816000.

The previous prime is 14891851907. The next prime is 14891851921. The reversal of 14891851920 is 2915819841.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 14891851920.

It is not an unprimeable number, because it can be changed into a prime (14891851921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 94852482 + ... + 94852638.

It is an arithmetic number, because the mean of its divisors is an integer number (87458688).

Almost surely, 2^14891851920 is an apocalyptic number.

14891851920 is a gapful number since it is divisible by the number (10) 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 14891851920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27986780160).

14891851920 is an abundant number, since it is smaller than the sum of its proper divisors (41081708400).

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

14891851920 is a wasteful number, since it uses less digits than its factorization.

14891851920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 14891851920 in words is "fourteen billion, eight hundred ninety-one million, eight hundred fifty-one thousand, nine hundred twenty".