1673062981 has 2 divisors, whose sum is σ = 1673062982. Its totient is φ = 1673062980.

The previous prime is 1673062969. The next prime is 1673063009. The reversal of 1673062981 is 1892603761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1658932900 + 14130081 = 40730^2 + 3759^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673062981 - 2⁵ = 1673062949 is a prime.

It is a super-2 number, since 2×1673062981² = 5598279476785212722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673062961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836531490 + 836531491.

It is an arithmetic number, because the mean of its divisors is an integer number (836531491).

Almost surely, 2^1673062981 is an apocalyptic number.

It is an amenable number.

1673062981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673062981 is an equidigital number, since it uses as much as digits as its factorization.

1673062981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1673062981 is about 40903.0925603432. The cubic root of 1673062981 is about 1187.1458991635.

The spelling of 1673062981 in words is "one billion, six hundred seventy-three million, sixty-two thousand, nine hundred eighty-one".