1228001461 has 2 divisors, whose sum is σ = 1228001462. Its totient is φ = 1228001460.

The previous prime is 1228001449. The next prime is 1228001479. The reversal of 1228001461 is 1641008221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975000625 + 253000836 = 31225^2 + 15906^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228001461 - 2¹¹ = 1227999413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228001561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614000730 + 614000731.

It is an arithmetic number, because the mean of its divisors is an integer number (614000731).

Almost surely, 2^1228001461 is an apocalyptic number.

It is an amenable number.

1228001461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228001461 is an equidigital number, since it uses as much as digits as its factorization.

1228001461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1228001461 is about 35042.8517817828. The cubic root of 1228001461 is about 1070.8606523549.

Adding to 1228001461 its reverse (1641008221), we get a palindrome (2869009682).

The spelling of 1228001461 in words is "one billion, two hundred twenty-eight million, one thousand, four hundred sixty-one".