1913000253 has 4 divisors (see below), whose sum is σ = 2550667008. Its totient is φ = 1275333500.

The previous prime is 1913000239. The next prime is 1913000273. The reversal of 1913000253 is 3520003191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1913000253 - 2¹² = 1912996157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913000203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318833373 + ... + 318833378.

It is an arithmetic number, because the mean of its divisors is an integer number (637666752).

Almost surely, 2^1913000253 is an apocalyptic number.

It is an amenable number.

1913000253 is a deficient number, since it is larger than the sum of its proper divisors (637666755).

1913000253 is an equidigital number, since it uses as much as digits as its factorization.

1913000253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637666754.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 1913000253 is about 43737.8583494894. The cubic root of 1913000253 is about 1241.3807575052.

The spelling of 1913000253 in words is "one billion, nine hundred thirteen million, two hundred fifty-three", and thus it is an aban number.