1264563044 has 6 divisors (see below), whose sum is σ = 2212985334. Its totient is φ = 632281520.

The previous prime is 1264563029. The next prime is 1264563061. The reversal of 1264563044 is 4403654621.

It can be written as a sum of positive squares in only one way, i.e., 775622500 + 488940544 = 27850^2 + 22112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1264562995 and 1264563013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158070377 + ... + 158070384.

It is an arithmetic number, because the mean of its divisors is an integer number (368830889).

Almost surely, 2^1264563044 is an apocalyptic number.

It is an amenable number.

1264563044 is a deficient number, since it is larger than the sum of its proper divisors (948422290).

1264563044 is a wasteful number, since it uses less digits than its factorization.

1264563044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316140765 (or 316140763 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 1264563044 is about 35560.6952125517. The cubic root of 1264563044 is about 1081.3845536985.

The spelling of 1264563044 in words is "one billion, two hundred sixty-four million, five hundred sixty-three thousand, forty-four".