1264603211 has 6 divisors (see below), whose sum is σ = 1294698420. Its totient is φ = 1235192028.

The previous prime is 1264603201. The next prime is 1264603213. The reversal of 1264603211 is 1123064621.

It is not a de Polignac number, because 1264603211 - 2²² = 1260408907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264603213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340121 + ... + 343818.

It is an arithmetic number, because the mean of its divisors is an integer number (215783070).

Almost surely, 2^1264603211 is an apocalyptic number.

1264603211 is a deficient number, since it is larger than the sum of its proper divisors (30095209).

1264603211 is an frugal number, since it uses more digits than its factorization.

1264603211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684025 (or 683982 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1264603211 is about 35561.2599748659. The cubic root of 1264603211 is about 1081.3960031114.

Adding to 1264603211 its reverse (1123064621), we get a palindrome (2387667832).

The spelling of 1264603211 in words is "one billion, two hundred sixty-four million, six hundred three thousand, two hundred eleven".