290676433981 has 2 divisors, whose sum is σ = 290676433982. Its totient is φ = 290676433980.

The previous prime is 290676433913. The next prime is 290676434051. The reversal of 290676433981 is 189334676092.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188590432900 + 102086001081 = 434270^2 + 319509^2 .

It is a cyclic number.

It is not a de Polignac number, because 290676433981 - 2¹³ = 290676425789 is a prime.

It is a super-2 number, since 2×290676433981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290676434981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145338216990 + 145338216991.

It is an arithmetic number, because the mean of its divisors is an integer number (145338216991).

Almost surely, 2^290676433981 is an apocalyptic number.

It is an amenable number.

290676433981 is a deficient number, since it is larger than the sum of its proper divisors (1).

290676433981 is an equidigital number, since it uses as much as digits as its factorization.

290676433981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 290676433981 in words is "two hundred ninety billion, six hundred seventy-six million, four hundred thirty-three thousand, nine hundred eighty-one".