1461891229 has 4 divisors (see below), whose sum is σ = 1465283520. Its totient is φ = 1458498940.

The previous prime is 1461891191. The next prime is 1461891241. The reversal of 1461891229 is 9221981641.

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 1461891229 - 2¹³ = 1461883037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461891269) 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, 1695499 + ... + 1696360.

It is an arithmetic number, because the mean of its divisors is an integer number (366320880).

Almost surely, 2^1461891229 is an apocalyptic number.

It is an amenable number.

1461891229 is a deficient number, since it is larger than the sum of its proper divisors (3392291).

1461891229 is an equidigital number, since it uses as much as digits as its factorization.

1461891229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392290.

The product of its digits is 62208, while the sum is 43.

The square root of 1461891229 is about 38234.6862024523. The cubic root of 1461891229 is about 1134.9368227366.

The spelling of 1461891229 in words is "one billion, four hundred sixty-one million, eight hundred ninety-one thousand, two hundred twenty-nine".