1661484134 has 4 divisors (see below), whose sum is σ = 2492226204. Its totient is φ = 830742066.

The previous prime is 1661484133. The next prime is 1661484163. The reversal of 1661484134 is 4314841661.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661484133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415371032 + ... + 415371035.

It is an arithmetic number, because the mean of its divisors is an integer number (623056551).

Almost surely, 2^1661484134 is an apocalyptic number.

1661484134 is a deficient number, since it is larger than the sum of its proper divisors (830742070).

1661484134 is an equidigital number, since it uses as much as digits as its factorization.

1661484134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830742069.

The product of its digits is 55296, while the sum is 38.

The square root of 1661484134 is about 40761.3068239967. The cubic root of 1661484134 is about 1184.4009111310.

The spelling of 1661484134 in words is "one billion, six hundred sixty-one million, four hundred eighty-four thousand, one hundred thirty-four".