451889711890 has 16 divisors (see below), whose sum is σ = 833240542680. Its totient is φ = 176347204480.

The previous prime is 451889711873. The next prime is 451889711891. The reversal of 451889711890 is 98117988154.

It can be written as a sum of positive squares in 4 ways, for example, as 246841042561 + 205048669329 = 496831^2 + 452823^2 .

It is not an unprimeable number, because it can be changed into a prime (451889711891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551084605 + ... + 551085424.

Almost surely, 2^451889711890 is an apocalyptic number.

451889711890 is a deficient number, since it is larger than the sum of its proper divisors (381350830790).

451889711890 is a wasteful number, since it uses less digits than its factorization.

451889711890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102170077.

The product of its (nonzero) digits is 5806080, while the sum is 61.

The spelling of 451889711890 in words is "four hundred fifty-one billion, eight hundred eighty-nine million, seven hundred eleven thousand, eight hundred ninety".