1331909092 has 6 divisors (see below), whose sum is σ = 2330840918. Its totient is φ = 665954544.

The previous prime is 1331909087. The next prime is 1331909099. The reversal of 1331909092 is 2909091331.

It can be written as a sum of positive squares in only one way, i.e., 1231588836 + 100320256 = 35094^2 + 10016^2 .

It is not an unprimeable number, because it can be changed into a prime (1331909099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166488633 + ... + 166488640.

Almost surely, 2^1331909092 is an apocalyptic number.

It is an amenable number.

1331909092 is a deficient number, since it is larger than the sum of its proper divisors (998931826).

1331909092 is a wasteful number, since it uses less digits than its factorization.

1331909092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332977277 (or 332977275 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 1331909092 is about 36495.3297286105. The cubic root of 1331909092 is about 1100.2503815714.

The spelling of 1331909092 in words is "one billion, three hundred thirty-one million, nine hundred nine thousand, ninety-two".