14531951820 has 24 divisors (see below), whose sum is σ = 40689465264. Its totient is φ = 3875187136.

The previous prime is 14531951813. The next prime is 14531951821. The reversal of 14531951820 is 2815913541.

It is a super-2 number, since 2×14531951820² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14531951821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121099539 + ... + 121099658.

It is an arithmetic number, because the mean of its divisors is an integer number (1695394386).

Almost surely, 2^14531951820 is an apocalyptic number.

14531951820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14531951820 is an abundant number, since it is smaller than the sum of its proper divisors (26157513444).

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

14531951820 is a wasteful number, since it uses less digits than its factorization.

14531951820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242199209 (or 242199207 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 14531951820 in words is "fourteen billion, five hundred thirty-one million, nine hundred fifty-one thousand, eight hundred twenty".