181983973248 has 192 divisors, whose sum is σ = 652897365120. Its totient is φ = 47268541440.

The previous prime is 181983973243. The next prime is 181983973291. The reversal of 181983973248 is 842379389181.

181983973248 is a `hidden beast` number, since 18 + 198 + 397 + 3 + 2 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181983973243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 937090 + ... + 1114497.

It is an arithmetic number, because the mean of its divisors is an integer number (3400507110).

Almost surely, 2^181983973248 is an apocalyptic number.

181983973248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

181983973248 is an abundant number, since it is smaller than the sum of its proper divisors (470913391872).

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

181983973248 is a wasteful number, since it uses less digits than its factorization.

181983973248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051625 (or 2051610 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 181983973248 in words is "one hundred eighty-one billion, nine hundred eighty-three million, nine hundred seventy-three thousand, two hundred forty-eight".