1351960561 has 32 divisors (see below), whose sum is σ = 1688576000. Its totient is φ = 1056291840.

The previous prime is 1351960537. The next prime is 1351960601. The reversal of 1351960561 is 1650691531.

It is a cyclic number.

It is not a de Polignac number, because 1351960561 - 2⁵ = 1351960529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1351960561.

It is not an unprimeable number, because it can be changed into a prime (1351960261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794890 + ... + 796588.

It is an arithmetic number, because the mean of its divisors is an integer number (52768000).

Almost surely, 2^1351960561 is an apocalyptic number.

It is an amenable number.

1351960561 is a deficient number, since it is larger than the sum of its proper divisors (336615439).

1351960561 is a wasteful number, since it uses less digits than its factorization.

1351960561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 1351960561 is about 36769.0163180904. The cubic root of 1351960561 is about 1105.7442106909.

The spelling of 1351960561 in words is "one billion, three hundred fifty-one million, nine hundred sixty thousand, five hundred sixty-one".