1264523494 has 8 divisors (see below), whose sum is σ = 2042691840. Its totient is φ = 583626216.

The previous prime is 1264523471. The next prime is 1264523503. The reversal of 1264523494 is 4943254621.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24317734 + ... + 24317785.

It is an arithmetic number, because the mean of its divisors is an integer number (255336480).

Almost surely, 2^1264523494 is an apocalyptic number.

1264523494 is a deficient number, since it is larger than the sum of its proper divisors (778168346).

1264523494 is a wasteful number, since it uses less digits than its factorization.

1264523494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48635534.

The product of its digits is 207360, while the sum is 40.

The square root of 1264523494 is about 35560.1391167133. The cubic root of 1264523494 is about 1081.3732799215.

The spelling of 1264523494 in words is "one billion, two hundred sixty-four million, five hundred twenty-three thousand, four hundred ninety-four".