19420379 has 6 divisors (see below), whose sum is σ = 21346500. Its totient is φ = 17654780.

The previous prime is 19420369. The next prime is 19420397. The reversal of 19420379 is 97302491.

It is not a de Polignac number, because 19420379 - 2⁸ = 19420123 is a prime.

It is a super-2 number, since 2×19420379² = 754302241007282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19420319) 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, 80129 + ... + 80370.

It is an arithmetic number, because the mean of its divisors is an integer number (3557750).

Almost surely, 2^19420379 is an apocalyptic number.

19420379 is a deficient number, since it is larger than the sum of its proper divisors (1926121).

19420379 is a wasteful number, since it uses less digits than its factorization.

19420379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160521 (or 160510 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 19420379 is about 4406.8559086950. The cubic root of 19420379 is about 268.7937917462.

The spelling of 19420379 in words is "nineteen million, four hundred twenty thousand, three hundred seventy-nine".