1461609399 has 8 divisors (see below), whose sum is σ = 1949037952. Its totient is φ = 974293560.

The previous prime is 1461609397. The next prime is 1461609433. The reversal of 1461609399 is 9939061641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1461609399 - 2¹ = 1461609397 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 (1461609397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9144 + ... + 54834.

It is an arithmetic number, because the mean of its divisors is an integer number (243629744).

Almost surely, 2^1461609399 is an apocalyptic number.

1461609399 is a deficient number, since it is larger than the sum of its proper divisors (487428553).

1461609399 is a wasteful number, since it uses less digits than its factorization.

1461609399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56357.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 1461609399 is about 38231.0004969789. Note that the first 3 decimals coincide. The cubic root of 1461609399 is about 1134.8638852989.

The spelling of 1461609399 in words is "one billion, four hundred sixty-one million, six hundred nine thousand, three hundred ninety-nine".