1409454661 has 2 divisors, whose sum is σ = 1409454662. Its totient is φ = 1409454660.

The previous prime is 1409454617. The next prime is 1409454671. The reversal of 1409454661 is 1664549041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1383393636 + 26061025 = 37194^2 + 5105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1409454661 - 2¹⁷ = 1409323589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1409454671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704727330 + 704727331.

It is an arithmetic number, because the mean of its divisors is an integer number (704727331).

Almost surely, 2^1409454661 is an apocalyptic number.

It is an amenable number.

1409454661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409454661 is an equidigital number, since it uses as much as digits as its factorization.

1409454661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1409454661 is about 37542.7044976784. The cubic root of 1409454661 is about 1121.2015859024.

The spelling of 1409454661 in words is "one billion, four hundred nine million, four hundred fifty-four thousand, six hundred sixty-one".