1308764478 has 64 divisors (see below), whose sum is σ = 3022018560. Its totient is φ = 370137600.

The previous prime is 1308764467. The next prime is 1308764497. The reversal of 1308764478 is 8744678031.

It is a super-2 number, since 2×1308764478² = 3425728917749224968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2418888 + ... + 2419428.

It is an arithmetic number, because the mean of its divisors is an integer number (47219040).

Almost surely, 2^1308764478 is an apocalyptic number.

1308764478 is an abundant number, since it is smaller than the sum of its proper divisors (1713254082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1308764478 is a wasteful number, since it uses less digits than its factorization.

1308764478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 1308764478 is about 36176.8500287131. The cubic root of 1308764478 is about 1093.8400811445.

The spelling of 1308764478 in words is "one billion, three hundred eight million, seven hundred sixty-four thousand, four hundred seventy-eight".