513907944 has 32 divisors (see below), whose sum is σ = 1401567840. Its totient is φ = 155729600.

The previous prime is 513907903. The next prime is 513907949. The reversal of 513907944 is 449709315.

It is a junction number, because it is equal to n+sod(n) for n = 513907896 and 513907905.

It is not an unprimeable number, because it can be changed into a prime (513907949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973047 + ... + 973574.

It is an arithmetic number, because the mean of its divisors is an integer number (43798995).

Almost surely, 2^513907944 is an apocalyptic number.

It is an amenable number.

513907944 is an abundant number, since it is smaller than the sum of its proper divisors (887659896).

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

513907944 is a wasteful number, since it uses less digits than its factorization.

513907944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946641 (or 1946637 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 513907944 is about 22669.5377985525. The cubic root of 513907944 is about 800.9924890311.

The spelling of 513907944 in words is "five hundred thirteen million, nine hundred seven thousand, nine hundred forty-four".