1661046383 has 2 divisors, whose sum is σ = 1661046384. Its totient is φ = 1661046382.

The previous prime is 1661046281. The next prime is 1661046389. The reversal of 1661046383 is 3836401661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1661046383 - 2¹⁶ = 1660980847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1661046389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830523191 + 830523192.

It is an arithmetic number, because the mean of its divisors is an integer number (830523192).

Almost surely, 2^1661046383 is an apocalyptic number.

1661046383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1661046383 is an equidigital number, since it uses as much as digits as its factorization.

1661046383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1661046383 is about 40755.9367822652. The cubic root of 1661046383 is about 1184.2968840119.

The spelling of 1661046383 in words is "one billion, six hundred sixty-one million, forty-six thousand, three hundred eighty-three".