9954500381 has 24 divisors (see below), whose sum is σ = 11644799040. Its totient is φ = 8509451328.

The previous prime is 9954500341. The next prime is 9954500393. The reversal of 9954500381 is 1830054599.

It is a happy number.

It is not a de Polignac number, because 9954500381 - 2⁶ = 9954500317 is a prime.

It is a super-2 number, since 2×9954500381² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9954500321) 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, 9865205 + ... + 9866213.

It is an arithmetic number, because the mean of its divisors is an integer number (485199960).

Almost surely, 2^9954500381 is an apocalyptic number.

It is an amenable number.

9954500381 is a deficient number, since it is larger than the sum of its proper divisors (1690298659).

9954500381 is an frugal number, since it uses more digits than its factorization.

9954500381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 9954500381 is about 99772.2425376918. The cubic root of 9954500381 is about 2151.1621898331.

The spelling of 9954500381 in words is "nine billion, nine hundred fifty-four million, five hundred thousand, three hundred eighty-one".