1264523547 has 12 divisors (see below), whose sum is σ = 1961302056. Its totient is φ = 722584800.

The previous prime is 1264523543. The next prime is 1264523551. The reversal of 1264523547 is 7453254621.

It is an interprime number because it is at equal distance from previous prime (1264523543) and next prime (1264523551).

It is not a de Polignac number, because 1264523547 - 2² = 1264523543 is a prime.

It is a super-2 number, since 2×1264523547² = 3198039601834922418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1264523543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4300954 + ... + 4301247.

It is an arithmetic number, because the mean of its divisors is an integer number (163441838).

Almost surely, 2^1264523547 is an apocalyptic number.

1264523547 is a deficient number, since it is larger than the sum of its proper divisors (696778509).

1264523547 is an equidigital number, since it uses as much as digits as its factorization.

1264523547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602218 (or 8602211 counting only the distinct ones).

The product of its digits is 201600, while the sum is 39.

The square root of 1264523547 is about 35560.1398619297. The cubic root of 1264523547 is about 1081.3732950294.

The spelling of 1264523547 in words is "one billion, two hundred sixty-four million, five hundred twenty-three thousand, five hundred forty-seven".