1021646341 has 2 divisors, whose sum is σ = 1021646342. Its totient is φ = 1021646340.

The previous prime is 1021646317. The next prime is 1021646371. The reversal of 1021646341 is 1436461201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986588100 + 35058241 = 31410^2 + 5921^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021646341 - 2⁵ = 1021646309 is a prime.

It is a super-2 number, since 2×1021646341² = 2087522492157376562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021646371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510823170 + 510823171.

It is an arithmetic number, because the mean of its divisors is an integer number (510823171).

Almost surely, 2^1021646341 is an apocalyptic number.

It is an amenable number.

1021646341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021646341 is an equidigital number, since it uses as much as digits as its factorization.

1021646341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1021646341 is about 31963.2029214846. The cubic root of 1021646341 is about 1007.1640015230.

The spelling of 1021646341 in words is "one billion, twenty-one million, six hundred forty-six thousand, three hundred forty-one".