253694164 has 6 divisors (see below), whose sum is σ = 443964794. Its totient is φ = 126847080.

The previous prime is 253694143. The next prime is 253694197. The reversal of 253694164 is 461496352.

253694164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 221771664 + 31922500 = 14892^2 + 5650^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31711767 + ... + 31711774.

Almost surely, 2^253694164 is an apocalyptic number.

It is an amenable number.

253694164 is a deficient number, since it is larger than the sum of its proper divisors (190270630).

253694164 is a wasteful number, since it uses less digits than its factorization.

253694164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63423545 (or 63423543 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 253694164 is about 15927.7796318256. The cubic root of 253694164 is about 633.0482690028.

The spelling of 253694164 in words is "two hundred fifty-three million, six hundred ninety-four thousand, one hundred sixty-four".