1974423986 has 8 divisors (see below), whose sum is σ = 2963784684. Its totient is φ = 986495760.

The previous prime is 1974423973. The next prime is 1974424021. The reversal of 1974423986 is 6893244791.

It can be written as a sum of positive squares in 2 ways, for example, as 1701150025 + 273273961 = 41245^2 + 16531^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354665 + ... + 360188.

Almost surely, 2^1974423986 is an apocalyptic number.

1974423986 is a deficient number, since it is larger than the sum of its proper divisors (989360698).

1974423986 is a wasteful number, since it uses less digits than its factorization.

1974423986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716236.

The product of its digits is 2612736, while the sum is 53.

The square root of 1974423986 is about 44434.4909501617. The cubic root of 1974423986 is about 1254.5273662471.

The spelling of 1974423986 in words is "one billion, nine hundred seventy-four million, four hundred twenty-three thousand, nine hundred eighty-six".