1351022661 has 24 divisors (see below), whose sum is σ = 2002575744. Its totient is φ = 877282560.

The previous prime is 1351022653. The next prime is 1351022663. The reversal of 1351022661 is 1662201531.

It is not a de Polignac number, because 1351022661 - 2³ = 1351022653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351022663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81685 + ... + 96821.

It is an arithmetic number, because the mean of its divisors is an integer number (83440656).

Almost surely, 2^1351022661 is an apocalyptic number.

It is an amenable number.

1351022661 is a deficient number, since it is larger than the sum of its proper divisors (651553083).

1351022661 is a wasteful number, since it uses less digits than its factorization.

1351022661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15401 (or 15398 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1351022661 is about 36756.2601606856. The cubic root of 1351022661 is about 1105.4884543629.

The spelling of 1351022661 in words is "one billion, three hundred fifty-one million, twenty-two thousand, six hundred sixty-one".