1661423301 has 6 divisors (see below), whose sum is σ = 2399833670. Its totient is φ = 1107615528.

The previous prime is 1661423299. The next prime is 1661423363. The reversal of 1661423301 is 1033241661.

1661423301 is a `hidden beast` number, since 16 + 614 + 2 + 3 + 30 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1654374276 + 7049025 = 40674^2 + 2655^2 .

It is not a de Polignac number, because 1661423301 - 2¹ = 1661423299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661423371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92301286 + ... + 92301303.

Almost surely, 2^1661423301 is an apocalyptic number.

It is an amenable number.

1661423301 is a deficient number, since it is larger than the sum of its proper divisors (738410369).

1661423301 is a wasteful number, since it uses less digits than its factorization.

1661423301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184602595 (or 184602592 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1661423301 is about 40760.5606070378. The cubic root of 1661423301 is about 1184.3864558741.

Adding to 1661423301 its reverse (1033241661), we get a palindrome (2694664962).

The spelling of 1661423301 in words is "one billion, six hundred sixty-one million, four hundred twenty-three thousand, three hundred one".