1331887364 has 6 divisors (see below), whose sum is σ = 2330802894. Its totient is φ = 665943680.

The previous prime is 1331887357. The next prime is 1331887393. The reversal of 1331887364 is 4637881331.

It can be written as a sum of positive squares in only one way, i.e., 1270922500 + 60964864 = 35650^2 + 7808^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166485917 + ... + 166485924.

It is an arithmetic number, because the mean of its divisors is an integer number (388467149).

Almost surely, 2^1331887364 is an apocalyptic number.

It is an amenable number.

1331887364 is a deficient number, since it is larger than the sum of its proper divisors (998915530).

1331887364 is a wasteful number, since it uses less digits than its factorization.

1331887364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332971845 (or 332971843 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 1331887364 is about 36495.0320454716. The cubic root of 1331887364 is about 1100.2443985879.

The spelling of 1331887364 in words is "one billion, three hundred thirty-one million, eight hundred eighty-seven thousand, three hundred sixty-four".