253920018 has 16 divisors (see below), whose sum is σ = 554007456. Its totient is φ = 76945440.

The previous prime is 253920001. The next prime is 253920049. The reversal of 253920018 is 810029352.

It is a happy number.

It is a super-2 number, since 2×253920018² = 128950751082240648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1923571 + ... + 1923702.

It is an arithmetic number, because the mean of its divisors is an integer number (34625466).

Almost surely, 2^253920018 is an apocalyptic number.

253920018 is an abundant number, since it is smaller than the sum of its proper divisors (300087438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253920018 is a wasteful number, since it uses less digits than its factorization.

253920018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847289.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 253920018 is about 15934.8679944328. The cubic root of 253920018 is about 633.2360726607.

The spelling of 253920018 in words is "two hundred fifty-three million, nine hundred twenty thousand, eighteen".