454185690 has 128 divisors (see below), whose sum is σ = 1327104000. Its totient is φ = 97168896.

The previous prime is 454185649. The next prime is 454185701. The reversal of 454185690 is 96581454.

It is a super-2 number, since 2×454185690² = 412569282001552200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354471 + ... + 355749.

It is an arithmetic number, because the mean of its divisors is an integer number (10368000).

Almost surely, 2^454185690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 454185690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663552000).

454185690 is an abundant number, since it is smaller than the sum of its proper divisors (872918310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

454185690 is a wasteful number, since it uses less digits than its factorization.

454185690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 454185690 is about 21311.6327389527. The cubic root of 454185690 is about 768.6780544739.

The spelling of 454185690 in words is "four hundred fifty-four million, one hundred eighty-five thousand, six hundred ninety".