1264508997 has 16 divisors (see below), whose sum is σ = 1713930240. Its totient is φ = 829129392.

The previous prime is 1264508983. The next prime is 1264509007. The reversal of 1264508997 is 7998054621.

It is not a de Polignac number, because 1264508997 - 2⁶ = 1264508933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264508797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52188 + ... + 72474.

It is an arithmetic number, because the mean of its divisors is an integer number (107120640).

Almost surely, 2^1264508997 is an apocalyptic number.

It is an amenable number.

1264508997 is a deficient number, since it is larger than the sum of its proper divisors (449421243).

1264508997 is a wasteful number, since it uses less digits than its factorization.

1264508997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20632.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 1264508997 is about 35559.9352783438. The cubic root of 1264508997 is about 1081.3691474747.

The spelling of 1264508997 in words is "one billion, two hundred sixty-four million, five hundred eight thousand, nine hundred ninety-seven".