1461994493 has 16 divisors (see below), whose sum is σ = 1495972800. Its totient is φ = 1428556800.

The previous prime is 1461994477. The next prime is 1461994531. The reversal of 1461994493 is 3944991641.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1461994493 - 2⁴ = 1461994477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461994993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3489038 + ... + 3489456.

It is an arithmetic number, because the mean of its divisors is an integer number (93498300).

Almost surely, 2^1461994493 is an apocalyptic number.

It is an amenable number.

1461994493 is a deficient number, since it is larger than the sum of its proper divisors (33978307).

1461994493 is a wasteful number, since it uses less digits than its factorization.

1461994493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 839808, while the sum is 50.

The square root of 1461994493 is about 38236.0365754611. The cubic root of 1461994493 is about 1134.9635450523.

The spelling of 1461994493 in words is "one billion, four hundred sixty-one million, nine hundred ninety-four thousand, four hundred ninety-three".