534781919 has 4 divisors (see below), whose sum is σ = 611179344. Its totient is φ = 458384496.

The previous prime is 534781909. The next prime is 534781957. The reversal of 534781919 is 919187435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919187435 = 5 ⋅183837487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-534781919 is a prime.

It is a super-2 number, since 2×534781919² = 571983401778645122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534781909) 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, 38198702 + ... + 38198715.

It is an arithmetic number, because the mean of its divisors is an integer number (152794836).

Almost surely, 2^534781919 is an apocalyptic number.

534781919 is a deficient number, since it is larger than the sum of its proper divisors (76397425).

534781919 is an equidigital number, since it uses as much as digits as its factorization.

534781919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76397424.

The product of its digits is 272160, while the sum is 47.

The square root of 534781919 is about 23125.3523000191. The cubic root of 534781919 is about 811.6938182296.

The spelling of 534781919 in words is "five hundred thirty-four million, seven hundred eighty-one thousand, nine hundred nineteen".