619240253 has 4 divisors (see below), whose sum is σ = 619745340. Its totient is φ = 618735168.

The previous prime is 619240241. The next prime is 619240273. The reversal of 619240253 is 352042916.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356378884 + 262861369 = 18878^2 + 16213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-619240253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619240213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250700 + ... + 253157.

It is an arithmetic number, because the mean of its divisors is an integer number (154936335).

Almost surely, 2^619240253 is an apocalyptic number.

It is an amenable number.

619240253 is a deficient number, since it is larger than the sum of its proper divisors (505087).

619240253 is a wasteful number, since it uses less digits than its factorization.

619240253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505086.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 619240253 is about 24884.5384325287. The cubic root of 619240253 is about 852.3534561189.

The spelling of 619240253 in words is "six hundred nineteen million, two hundred forty thousand, two hundred fifty-three".