19009953 has 6 divisors (see below), whose sum is σ = 27458834. Its totient is φ = 12673296.

The previous prime is 19009943. The next prime is 19009957. The reversal of 19009953 is 35990091.

It can be written as a sum of positive squares in only one way, i.e., 11209104 + 7800849 = 3348^2 + 2793^2 .

It is not a de Polignac number, because 19009953 - 2⁶ = 19009889 is a prime.

It is a super-2 number, since 2×19009953² = 722756626124418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19009957) 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, 1056100 + ... + 1056117.

Almost surely, 2^19009953 is an apocalyptic number.

It is an amenable number.

19009953 is a deficient number, since it is larger than the sum of its proper divisors (8448881).

19009953 is a wasteful number, since it uses less digits than its factorization.

19009953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112223 (or 2112220 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 19009953 is about 4360.0404814634. The cubic root of 19009953 is about 266.8867507765.

The spelling of 19009953 in words is "nineteen million, nine thousand, nine hundred fifty-three".