153844000381 has 4 divisors (see below), whose sum is σ = 154019422012. Its totient is φ = 153668578752.

The previous prime is 153844000367. The next prime is 153844000391. The reversal of 153844000381 is 183000448351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122759136900 + 31084863481 = 350370^2 + 176309^2 .

It is a cyclic number.

It is not a de Polignac number, because 153844000381 - 2¹¹ = 153843998333 is a prime.

It is a super-3 number, since 3×153844000381³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 153844000381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153844000351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87709500 + ... + 87711253.

It is an arithmetic number, because the mean of its divisors is an integer number (38504855503).

Almost surely, 2^153844000381 is an apocalyptic number.

153844000381 is the 209656-th centered heptagonal number.

It is an amenable number.

153844000381 is a deficient number, since it is larger than the sum of its proper divisors (175421631).

153844000381 is an equidigital number, since it uses as much as digits as its factorization.

153844000381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175421630.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 153844000381 in words is "one hundred fifty-three billion, eight hundred forty-four million, three hundred eighty-one", and thus it is an aban number.