1662985351 has 2 divisors, whose sum is σ = 1662985352. Its totient is φ = 1662985350.

The previous prime is 1662985321. The next prime is 1662985369. The reversal of 1662985351 is 1535892661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1662985351 - 2¹³ = 1662977159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662985321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831492675 + 831492676.

It is an arithmetic number, because the mean of its divisors is an integer number (831492676).

Almost surely, 2^1662985351 is an apocalyptic number.

1662985351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662985351 is an equidigital number, since it uses as much as digits as its factorization.

1662985351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 46.

The square root of 1662985351 is about 40779.7173972552. The cubic root of 1662985351 is about 1184.7575215261.

The spelling of 1662985351 in words is "one billion, six hundred sixty-two million, nine hundred eighty-five thousand, three hundred fifty-one".