19490454 has 24 divisors (see below), whose sum is σ = 42355560. Its totient is φ = 6477408.

The previous prime is 19490437. The next prime is 19490467. The reversal of 19490454 is 45409491.

It is a happy number.

It is a super-2 number, since 2×19490454² = 759755594252232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5394 + ... + 8250.

It is an arithmetic number, because the mean of its divisors is an integer number (1764815).

Almost surely, 2^19490454 is an apocalyptic number.

19490454 is an abundant number, since it is smaller than the sum of its proper divisors (22865106).

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

19490454 is a wasteful number, since it uses less digits than its factorization.

19490454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244 (or 3241 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 19490454 is about 4414.7994291927. The cubic root of 19490454 is about 269.1167019417.

The spelling of 19490454 in words is "nineteen million, four hundred ninety thousand, four hundred fifty-four".