19940695 has 8 divisors (see below), whose sum is σ = 24025680. Its totient is φ = 15888000.

The previous prime is 19940693. The next prime is 19940699. The reversal of 19940695 is 59604991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19940695 - 2¹ = 19940693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940693) 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 7 ways as a sum of consecutive naturals, for example, 6690 + ... + 9199.

It is an arithmetic number, because the mean of its divisors is an integer number (3003210).

Almost surely, 2^19940695 is an apocalyptic number.

19940695 is a deficient number, since it is larger than the sum of its proper divisors (4084985).

19940695 is a wasteful number, since it uses less digits than its factorization.

19940695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16145.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 19940695 is about 4465.5005318553. The cubic root of 19940695 is about 271.1731984707.

It can be divided in two parts, 1994069 and 5, that multiplied together give a triangular number (9970345 = T₄₄₆₅).

The spelling of 19940695 in words is "nineteen million, nine hundred forty thousand, six hundred ninety-five".