1630454 has 8 divisors (see below), whose sum is σ = 2795088. Its totient is φ = 698760.

The previous prime is 1630451. The next prime is 1630457. The reversal of 1630454 is 4540361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1630451) and next prime (1630457).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1630454² = 5316760492232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58217 + ... + 58244.

It is an arithmetic number, because the mean of its divisors is an integer number (349386).

2^1630454 is an apocalyptic number.

1630454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1630454 is a deficient number, since it is larger than the sum of its proper divisors (1164634).

1630454 is a wasteful number, since it uses less digits than its factorization.

1630454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116470.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1630454 is about 1276.8923212237. The cubic root of 1630454 is about 117.6981175530.

The spelling of 1630454 in words is "one million, six hundred thirty thousand, four hundred fifty-four".