19380642 has 32 divisors (see below), whose sum is σ = 41402880. Its totient is φ = 6034560.

The previous prime is 19380623. The next prime is 19380653. The reversal of 19380642 is 24608391.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3598 + ... + 7190.

It is an arithmetic number, because the mean of its divisors is an integer number (1293840).

Almost surely, 2^19380642 is an apocalyptic number.

19380642 is an abundant number, since it is smaller than the sum of its proper divisors (22022238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19380642 is a wasteful number, since it uses less digits than its factorization.

19380642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 19380642 is about 4402.3450568987. The cubic root of 19380642 is about 268.6103357967.

The spelling of 19380642 in words is "nineteen million, three hundred eighty thousand, six hundred forty-two".