253890019 has 4 divisors (see below), whose sum is σ = 268824744. Its totient is φ = 238955296.

The previous prime is 253889959. The next prime is 253890029. The reversal of 253890019 is 910098352.

253890019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 253890019 - 2¹⁹ = 253365731 is a prime.

It is a super-2 number, since 2×253890019² = 128920283495640722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253890019.

It is not an unprimeable number, because it can be changed into a prime (253890029) 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, 7467337 + ... + 7467370.

It is an arithmetic number, because the mean of its divisors is an integer number (67206186).

Almost surely, 2^253890019 is an apocalyptic number.

253890019 is a deficient number, since it is larger than the sum of its proper divisors (14934725).

253890019 is a wasteful number, since it uses less digits than its factorization.

253890019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14934724.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 253890019 is about 15933.9266660795. The cubic root of 253890019 is about 633.2111341029.

The spelling of 253890019 in words is "two hundred fifty-three million, eight hundred ninety thousand, nineteen".