1990412723 has 8 divisors (see below), whose sum is σ = 2156674128. Its totient is φ = 1826030304.

The previous prime is 1990412701. The next prime is 1990412741. The reversal of 1990412723 is 3272140991.

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

It is a cyclic number.

It is not a de Polignac number, because 1990412723 - 2¹⁴ = 1990396339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1990412923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467540 + ... + 471777.

It is an arithmetic number, because the mean of its divisors is an integer number (269584266).

Almost surely, 2^1990412723 is an apocalyptic number.

1990412723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1990412723 is a deficient number, since it is larger than the sum of its proper divisors (166261405).

1990412723 is a wasteful number, since it uses less digits than its factorization.

1990412723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939493.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1990412723 is about 44614.0417693802. The cubic root of 1990412723 is about 1257.9046224290.

The spelling of 1990412723 in words is "one billion, nine hundred ninety million, four hundred twelve thousand, seven hundred twenty-three".