290870624381 has 2 divisors, whose sum is σ = 290870624382. Its totient is φ = 290870624380.

The previous prime is 290870624333. The next prime is 290870624423. The reversal of 290870624381 is 183426078092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290807818756 + 62805625 = 539266^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 290870624381 - 2³⁴ = 273690755197 is a prime.

It is a super-2 number, since 2×290870624381² (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 (290870624881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145435312190 + 145435312191.

It is an arithmetic number, because the mean of its divisors is an integer number (145435312191).

Almost surely, 2^290870624381 is an apocalyptic number.

It is an amenable number.

290870624381 is a deficient number, since it is larger than the sum of its proper divisors (1).

290870624381 is an equidigital number, since it uses as much as digits as its factorization.

290870624381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 290870624381 in words is "two hundred ninety billion, eight hundred seventy million, six hundred twenty-four thousand, three hundred eighty-one".