253991190 has 32 divisors (see below), whose sum is σ = 619576416. Its totient is φ = 66620160.

The previous prime is 253991173. The next prime is 253991191. The reversal of 253991190 is 91199352.

253991190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×253991190² = 129023049195232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253991191) 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, 67567 + ... + 71226.

It is an arithmetic number, because the mean of its divisors is an integer number (19361763).

Almost surely, 2^253991190 is an apocalyptic number.

253991190 is an abundant number, since it is smaller than the sum of its proper divisors (365585226).

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

253991190 is a wasteful number, since it uses less digits than its factorization.

253991190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138864.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 253991190 is about 15937.1010538303. The cubic root of 253991190 is about 633.2952310103.

The spelling of 253991190 in words is "two hundred fifty-three million, nine hundred ninety-one thousand, one hundred ninety".