454257891890 has 32 divisors (see below), whose sum is σ = 900828993600. Its totient is φ = 163549192000.

The previous prime is 454257891889. The next prime is 454257891911. The reversal of 454257891890 is 98198752454.

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 15 ways as a sum of consecutive naturals, for example, 20432540 + ... + 20454759.

It is an arithmetic number, because the mean of its divisors is an integer number (28150906050).

Almost surely, 2^454257891890 is an apocalyptic number.

454257891890 is a deficient number, since it is larger than the sum of its proper divisors (446571101710).

454257891890 is a wasteful number, since it uses less digits than its factorization.

454257891890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40887418.

The product of its (nonzero) digits is 29030400, while the sum is 62.

The spelling of 454257891890 in words is "four hundred fifty-four billion, two hundred fifty-seven million, eight hundred ninety-one thousand, eight hundred ninety".