1264920229 has 4 divisors (see below), whose sum is σ = 1271543040. Its totient is φ = 1258297420.

The previous prime is 1264920199. The next prime is 1264920253. The reversal of 1264920229 is 9220294621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9220294621 = 83 ⋅111087887.

It is a cyclic number.

It is not a de Polignac number, because 1264920229 - 2⁵ = 1264920197 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 (1264920829) 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, 3311119 + ... + 3311500.

It is an arithmetic number, because the mean of its divisors is an integer number (317885760).

Almost surely, 2^1264920229 is an apocalyptic number.

It is an amenable number.

1264920229 is a deficient number, since it is larger than the sum of its proper divisors (6622811).

1264920229 is an equidigital number, since it uses as much as digits as its factorization.

1264920229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622810.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1264920229 is about 35565.7170460543. The cubic root of 1264920229 is about 1081.4863590830.

The spelling of 1264920229 in words is "one billion, two hundred sixty-four million, nine hundred twenty thousand, two hundred twenty-nine".