253478619 has 16 divisors (see below), whose sum is σ = 397614240. Its totient is φ = 159045120.

The previous prime is 253478587. The next prime is 253478623. The reversal of 253478619 is 916874352.

253478619 is a `hidden beast` number, since 25 + 3 + 4 + 7 + 8 + 619 = 666.

It is not a de Polignac number, because 253478619 - 2⁵ = 253478587 is a prime.

It is a super-2 number, since 2×253478619² = 128502820580294322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253478629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275662 + ... + 276579.

It is an arithmetic number, because the mean of its divisors is an integer number (24850890).

Almost surely, 2^253478619 is an apocalyptic number.

253478619 is a deficient number, since it is larger than the sum of its proper divisors (144135621).

253478619 is a wasteful number, since it uses less digits than its factorization.

253478619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552267 (or 552261 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 253478619 is about 15921.0118711092. The cubic root of 253478619 is about 632.8689335790.

The spelling of 253478619 in words is "two hundred fifty-three million, four hundred seventy-eight thousand, six hundred nineteen".