1285346401 has 2 divisors, whose sum is σ = 1285346402. Its totient is φ = 1285346400.

The previous prime is 1285346389. The next prime is 1285346423. The reversal of 1285346401 is 1046435821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 689010001 + 596336400 = 26249^2 + 24420^2 .

It is an emirp because it is prime and its reverse (1046435821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1285346401 - 2¹¹ = 1285344353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1285346201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642673200 + 642673201.

It is an arithmetic number, because the mean of its divisors is an integer number (642673201).

Almost surely, 2^1285346401 is an apocalyptic number.

It is an amenable number.

1285346401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285346401 is an equidigital number, since it uses as much as digits as its factorization.

1285346401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1285346401 is about 35851.7280057740. The cubic root of 1285346401 is about 1087.2766514679.

The spelling of 1285346401 in words is "one billion, two hundred eighty-five million, three hundred forty-six thousand, four hundred one".