19914814 has 4 divisors (see below), whose sum is σ = 29872224. Its totient is φ = 9957406.

The previous prime is 19914809. The next prime is 19914821. The reversal of 19914814 is 41841991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41841991 = 23 ⋅1819217.

It is a super-3 number, since 3×19914814³ (a number of 23 digits) contains 333 as substring.

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, 4978702 + ... + 4978705.

It is an arithmetic number, because the mean of its divisors is an integer number (7468056).

Almost surely, 2^19914814 is an apocalyptic number.

19914814 is a deficient number, since it is larger than the sum of its proper divisors (9957410).

19914814 is an equidigital number, since it uses as much as digits as its factorization.

19914814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9957409.

The product of its digits is 10368, while the sum is 37.

The square root of 19914814 is about 4462.6017075244. The cubic root of 19914814 is about 271.0558292406.

The spelling of 19914814 in words is "nineteen million, nine hundred fourteen thousand, eight hundred fourteen".