1331260654 has 16 divisors (see below), whose sum is σ = 2114817408. Its totient is φ = 627185592.

The previous prime is 1331260649. The next prime is 1331260661. The reversal of 1331260654 is 4560621331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212892 + ... + 219055.

It is an arithmetic number, because the mean of its divisors is an integer number (132176088).

Almost surely, 2^1331260654 is an apocalyptic number.

1331260654 is a deficient number, since it is larger than the sum of its proper divisors (783556754).

1331260654 is a wasteful number, since it uses less digits than its factorization.

1331260654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432039.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1331260654 is about 36486.4447980342. Note that the first 3 decimals coincide. The cubic root of 1331260654 is about 1100.0718008229.

Adding to 1331260654 its reverse (4560621331), we get a palindrome (5891881985).

The spelling of 1331260654 in words is "one billion, three hundred thirty-one million, two hundred sixty thousand, six hundred fifty-four".