181229801454 has 96 divisors (see below), whose sum is σ = 434790108480. Its totient is φ = 54194489856.

The previous prime is 181229801449. The next prime is 181229801479. The reversal of 181229801454 is 454108922181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7945314 + ... + 7968090.

It is an arithmetic number, because the mean of its divisors is an integer number (4529063630).

Almost surely, 2^181229801454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181229801454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217395054240).

181229801454 is an abundant number, since it is smaller than the sum of its proper divisors (253560307026).

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

181229801454 is a wasteful number, since it uses less digits than its factorization.

181229801454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23754 (or 23751 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 181229801454 in words is "one hundred eighty-one billion, two hundred twenty-nine million, eight hundred one thousand, four hundred fifty-four".