1972019 has 4 divisors (see below), whose sum is σ = 2253744. Its totient is φ = 1690296.

The previous prime is 1972013. The next prime is 1972031. The reversal of 1972019 is 9102791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9102791 = 503 ⋅18097.

It is a cyclic number.

It is not a de Polignac number, because 1972019 - 2¹² = 1967923 is a prime.

It is a super-2 number, since 2×1972019² = 7777717872722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1971982 and 1972000.

It is not an unprimeable number, because it can be changed into a prime (1972013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140852 + ... + 140865.

It is an arithmetic number, because the mean of its divisors is an integer number (563436).

2^1972019 is an apocalyptic number.

1972019 is a deficient number, since it is larger than the sum of its proper divisors (281725).

1972019 is an equidigital number, since it uses as much as digits as its factorization.

1972019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281724.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1972019 is about 1404.2859395437. The cubic root of 1972019 is about 125.4017792041.

The spelling of 1972019 in words is "one million, nine hundred seventy-two thousand, nineteen".