18957454 has 4 divisors (see below), whose sum is σ = 28436184. Its totient is φ = 9478726.

The previous prime is 18957439. The next prime is 18957469. The reversal of 18957454 is 45475981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45475981 = 6607 ⋅6883.

It is an interprime number because it is at equal distance from previous prime (18957439) and next prime (18957469).

It is a self number, because there is not a number n which added to its sum of digits gives 18957454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4739362 + ... + 4739365.

It is an arithmetic number, because the mean of its divisors is an integer number (7109046).

Almost surely, 2^18957454 is an apocalyptic number.

18957454 is a deficient number, since it is larger than the sum of its proper divisors (9478730).

18957454 is an equidigital number, since it uses as much as digits as its factorization.

18957454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9478729.

The product of its digits is 201600, while the sum is 43.

The square root of 18957454 is about 4354.0158474677. The cubic root of 18957454 is about 266.6408409017.

The spelling of 18957454 in words is "eighteen million, nine hundred fifty-seven thousand, four hundred fifty-four".