512913491 has 8 divisors (see below), whose sum is σ = 532707840. Its totient is φ = 493489288.

The previous prime is 512913487. The next prime is 512913553. The reversal of 512913491 is 194319215.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 512913491 - 2² = 512913487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512913431) 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, 89711 + ... + 95256.

It is an arithmetic number, because the mean of its divisors is an integer number (66588480).

Almost surely, 2^512913491 is an apocalyptic number.

512913491 is a deficient number, since it is larger than the sum of its proper divisors (19794349).

512913491 is a wasteful number, since it uses less digits than its factorization.

512913491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185073.

The product of its digits is 9720, while the sum is 35.

The square root of 512913491 is about 22647.5934924663. The cubic root of 512913491 is about 800.4754938885.

The spelling of 512913491 in words is "five hundred twelve million, nine hundred thirteen thousand, four hundred ninety-one".