19483945 has 16 divisors (see below), whose sum is σ = 25768512. Its totient is φ = 14051520.

The previous prime is 19483943. The next prime is 19483963. The reversal of 19483945 is 54938491.

It is a happy number.

It is not a de Polignac number, because 19483945 - 2¹ = 19483943 is a prime.

It is a super-2 number, since 2×19483945² = 759248225526050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19483943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691 + ... + 6280.

It is an arithmetic number, because the mean of its divisors is an integer number (1610532).

Almost surely, 2^19483945 is an apocalyptic number.

It is an amenable number.

19483945 is a deficient number, since it is larger than the sum of its proper divisors (6284567).

19483945 is a wasteful number, since it uses less digits than its factorization.

19483945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032.

The product of its digits is 155520, while the sum is 43.

The square root of 19483945 is about 4414.0621880531. The cubic root of 19483945 is about 269.0867406822.

The spelling of 19483945 in words is "nineteen million, four hundred eighty-three thousand, nine hundred forty-five".