1264973205 has 64 divisors (see below), whose sum is σ = 2222857728. Its totient is φ = 612311040.

The previous prime is 1264973167. The next prime is 1264973239. The reversal of 1264973205 is 5023794621.

It is not a de Polignac number, because 1264973205 - 2⁹ = 1264972693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 522157 + ... + 524573.

It is an arithmetic number, because the mean of its divisors is an integer number (34732152).

Almost surely, 2^1264973205 is an apocalyptic number.

1264973205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1264973205 is a deficient number, since it is larger than the sum of its proper divisors (957884523).

1264973205 is a wasteful number, since it uses less digits than its factorization.

1264973205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1264973205 is about 35566.4618004097. The cubic root of 1264973205 is about 1081.5014567469.

The spelling of 1264973205 in words is "one billion, two hundred sixty-four million, nine hundred seventy-three thousand, two hundred five".