1972219 has 4 divisors (see below), whose sum is σ = 2076040. Its totient is φ = 1868400.

The previous prime is 1972207. The next prime is 1972231. The reversal of 1972219 is 9122791.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1972207) and next prime (1972231).

It is a cyclic number.

It is not a de Polignac number, because 1972219 - 2⁹ = 1971707 is a prime.

It is a super-2 number, since 2×1972219² = 7779295567922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972249) 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, 51882 + ... + 51919.

It is an arithmetic number, because the mean of its divisors is an integer number (519010).

2^1972219 is an apocalyptic number.

1972219 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1972219 is a deficient number, since it is larger than the sum of its proper divisors (103821).

1972219 is a wasteful number, since it uses less digits than its factorization.

1972219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103820.

The product of its digits is 2268, while the sum is 31.

The square root of 1972219 is about 1404.3571483067. The cubic root of 1972219 is about 125.4060184310.

The spelling of 1972219 in words is "one million, nine hundred seventy-two thousand, two hundred nineteen".