1965560451 has 16 divisors (see below), whose sum is σ = 2776761504. Its totient is φ = 1232469504.

The previous prime is 1965560411. The next prime is 1965560543. The reversal of 1965560451 is 1540655691.

It is not a de Polignac number, because 1965560451 - 2¹⁴ = 1965544067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1965560411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69381 + ... + 93513.

It is an arithmetic number, because the mean of its divisors is an integer number (173547594).

Almost surely, 2^1965560451 is an apocalyptic number.

1965560451 is a deficient number, since it is larger than the sum of its proper divisors (811201053).

1965560451 is a wasteful number, since it uses less digits than its factorization.

1965560451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25750.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 1965560451 is about 44334.6416586398. The cubic root of 1965560451 is about 1252.6472857580.

The spelling of 1965560451 in words is "one billion, nine hundred sixty-five million, five hundred sixty thousand, four hundred fifty-one".