19452081 has 24 divisors (see below), whose sum is σ = 29225952. Its totient is φ = 11492800.

The previous prime is 19452079. The next prime is 19452119. The reversal of 19452081 is 18025491.

It is a happy number.

It is not a de Polignac number, because 19452081 - 2¹ = 19452079 is a prime.

It is a super-2 number, since 2×19452081² = 756766910461122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19452001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14230 + ... + 15536.

It is an arithmetic number, because the mean of its divisors is an integer number (1217748).

Almost surely, 2^19452081 is an apocalyptic number.

19452081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19452081 is a deficient number, since it is larger than the sum of its proper divisors (9773871).

19452081 is a wasteful number, since it uses less digits than its factorization.

19452081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 19452081 is about 4410.4513374484. The cubic root of 19452081 is about 268.9399726942.

The spelling of 19452081 in words is "nineteen million, four hundred fifty-two thousand, eighty-one".