1394507764 has 12 divisors (see below), whose sum is σ = 2628110884. Its totient is φ = 643618944.

The previous prime is 1394507761. The next prime is 1394507819. The reversal of 1394507764 is 4677054931.

It can be written as a sum of positive squares in 2 ways, for example, as 723179664 + 671328100 = 26892^2 + 25910^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394507761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13408677 + ... + 13408780.

Almost surely, 2^1394507764 is an apocalyptic number.

It is an amenable number.

1394507764 is a deficient number, since it is larger than the sum of its proper divisors (1233603120).

1394507764 is a wasteful number, since it uses less digits than its factorization.

1394507764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26817474 (or 26817472 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 1394507764 is about 37343.1086547438. The cubic root of 1394507764 is about 1117.2241430982.

The spelling of 1394507764 in words is "one billion, three hundred ninety-four million, five hundred seven thousand, seven hundred sixty-four".