1972090286 has 8 divisors (see below), whose sum is σ = 2960072184. Its totient is φ = 985399560.

The previous prime is 1972090279. The next prime is 1972090297. The reversal of 1972090286 is 6820902791.

It is a happy number.

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

It is a super-2 number, since 2×1972090286² = 7778280192271123592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318965 + ... + 325088.

It is an arithmetic number, because the mean of its divisors is an integer number (370009023).

Almost surely, 2^1972090286 is an apocalyptic number.

1972090286 is a deficient number, since it is larger than the sum of its proper divisors (987981898).

1972090286 is a wasteful number, since it uses less digits than its factorization.

1972090286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645586.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 1972090286 is about 44408.2231799472. The cubic root of 1972090286 is about 1254.0329022465.

The spelling of 1972090286 in words is "one billion, nine hundred seventy-two million, ninety thousand, two hundred eighty-six".