996519381 has 32 divisors (see below), whose sum is σ = 1587479040. Its totient is φ = 548030400.

The previous prime is 996519347. The next prime is 996519437. The reversal of 996519381 is 183915699.

It is a happy number.

It is not a de Polignac number, because 996519381 - 2⁶ = 996519317 is a prime.

It is a super-3 number, since 3×996519381³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996518381) 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 31 ways as a sum of consecutive naturals, for example, 5626 + ... + 44996.

It is an arithmetic number, because the mean of its divisors is an integer number (49608720).

Almost surely, 2^996519381 is an apocalyptic number.

996519381 is the 16874-th nonagonal number.

It is an amenable number.

996519381 is a deficient number, since it is larger than the sum of its proper divisors (590959659).

996519381 is a wasteful number, since it uses less digits than its factorization.

996519381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39457.

The product of its digits is 524880, while the sum is 51.

The square root of 996519381 is about 31567.6952120360. The cubic root of 996519381 is about 998.8384449790.

The spelling of 996519381 in words is "nine hundred ninety-six million, five hundred nineteen thousand, three hundred eighty-one".