1264719953 has 8 divisors (see below), whose sum is σ = 1447903872. Its totient is φ = 1082163456.

The previous prime is 1264719919. The next prime is 1264719961. The reversal of 1264719953 is 3599174621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264719953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264719898 and 1264719907.

It is not an unprimeable number, because it can be changed into a prime (1264719353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152525 + ... + 160602.

It is an arithmetic number, because the mean of its divisors is an integer number (180987984).

Almost surely, 2^1264719953 is an apocalyptic number.

It is an amenable number.

1264719953 is a deficient number, since it is larger than the sum of its proper divisors (183183919).

1264719953 is an equidigital number, since it uses as much as digits as its factorization.

1264719953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313711.

The product of its digits is 408240, while the sum is 47.

The square root of 1264719953 is about 35562.9013580163. The cubic root of 1264719953 is about 1081.4292784889.

The spelling of 1264719953 in words is "one billion, two hundred sixty-four million, seven hundred nineteen thousand, nine hundred fifty-three".