1913429227 has 4 divisors (see below), whose sum is σ = 1913546440. Its totient is φ = 1913312016.

The previous prime is 1913429191. The next prime is 1913429233. The reversal of 1913429227 is 7229243191.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913429227 is a prime.

It is a super-2 number, since 2×1913429227² = 7322422813475635058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1913429227.

It is not an unprimeable number, because it can be changed into a prime (1913429327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29202 + ... + 68407.

It is an arithmetic number, because the mean of its divisors is an integer number (478386610).

Almost surely, 2^1913429227 is an apocalyptic number.

1913429227 is a deficient number, since it is larger than the sum of its proper divisors (117213).

1913429227 is an equidigital number, since it uses as much as digits as its factorization.

1913429227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117212.

The product of its digits is 54432, while the sum is 40.

The square root of 1913429227 is about 43742.7619955576. The cubic root of 1913429227 is about 1241.4735402547.

The spelling of 1913429227 in words is "one billion, nine hundred thirteen million, four hundred twenty-nine thousand, two hundred twenty-seven".