253928194 has 16 divisors (see below), whose sum is σ = 417933432. Its totient is φ = 114985728.

The previous prime is 253928159. The next prime is 253928203. The reversal of 253928194 is 491829352.

It can be written as a sum of positive squares in 4 ways, for example, as 247653169 + 6275025 = 15737^2 + 2505^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 253928194.

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, 90759 + ... + 93514.

Almost surely, 2^253928194 is an apocalyptic number.

253928194 is a deficient number, since it is larger than the sum of its proper divisors (164005238).

253928194 is a wasteful number, since it uses less digits than its factorization.

253928194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184341.

The product of its digits is 155520, while the sum is 43.

The square root of 253928194 is about 15935.1245366957. The cubic root of 253928194 is about 633.2428691349.

The spelling of 253928194 in words is "two hundred fifty-three million, nine hundred twenty-eight thousand, one hundred ninety-four".