1305378952 has 8 divisors (see below), whose sum is σ = 2447585550. Its totient is φ = 652689472.

The previous prime is 1305378947. The next prime is 1305378979. The reversal of 1305378952 is 2598735031.

It can be written as a sum of positive squares in only one way, i.e., 1150973476 + 154405476 = 33926^2 + 12426^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1305378899 and 1305378908.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81586177 + ... + 81586192.

Almost surely, 2^1305378952 is an apocalyptic number.

It is an amenable number.

1305378952 is a deficient number, since it is larger than the sum of its proper divisors (1142206598).

1305378952 is a wasteful number, since it uses less digits than its factorization.

1305378952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163172375 (or 163172371 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 1305378952 is about 36130.0283974425. The cubic root of 1305378952 is about 1092.8960809383.

The spelling of 1305378952 in words is "one billion, three hundred five million, three hundred seventy-eight thousand, nine hundred fifty-two".