1661413134 has 16 divisors (see below), whose sum is σ = 3364888320. Its totient is φ = 546794040.

The previous prime is 1661413121. The next prime is 1661413139. The reversal of 1661413134 is 4313141661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661413139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1752072 + ... + 1753019.

It is an arithmetic number, because the mean of its divisors is an integer number (210305520).

Almost surely, 2^1661413134 is an apocalyptic number.

1661413134 is an abundant number, since it is smaller than the sum of its proper divisors (1703475186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1661413134 is a wasteful number, since it uses less digits than its factorization.

1661413134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505175.

The product of its digits is 5184, while the sum is 30.

The square root of 1661413134 is about 40760.4358907017. The cubic root of 1661413134 is about 1184.3840399372.

Adding to 1661413134 its reverse (4313141661), we get a palindrome (5974554795).

The spelling of 1661413134 in words is "one billion, six hundred sixty-one million, four hundred thirteen thousand, one hundred thirty-four".