19490967 has 6 divisors (see below), whose sum is σ = 28153632. Its totient is φ = 12993972.

The previous prime is 19490963. The next prime is 19491001. The reversal of 19490967 is 76909491.

It is not a de Polignac number, because 19490967 - 2² = 19490963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19490963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1082823 + ... + 1082840.

It is an arithmetic number, because the mean of its divisors is an integer number (4692272).

Almost surely, 2^19490967 is an apocalyptic number.

19490967 is a deficient number, since it is larger than the sum of its proper divisors (8662665).

19490967 is a wasteful number, since it uses less digits than its factorization.

19490967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165669 (or 2165666 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 19490967 is about 4414.8575288451. The cubic root of 19490967 is about 269.1190630233.

The spelling of 19490967 in words is "nineteen million, four hundred ninety thousand, nine hundred sixty-seven".