1616542754 has 4 divisors (see below), whose sum is σ = 2424814134. Its totient is φ = 808271376.

The previous prime is 1616542729. The next prime is 1616542757. The reversal of 1616542754 is 4572456161.

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

It can be written as a sum of positive squares in only one way, i.e., 1582050625 + 34492129 = 39775^2 + 5873^2 .

It is a super-2 number, since 2×1616542754² = 5226420951019809032, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1616542757) 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, 404135687 + ... + 404135690.

Almost surely, 2^1616542754 is an apocalyptic number.

1616542754 is a deficient number, since it is larger than the sum of its proper divisors (808271380).

1616542754 is an equidigital number, since it uses as much as digits as its factorization.

1616542754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808271379.

The product of its digits is 201600, while the sum is 41.

The square root of 1616542754 is about 40206.2526729363. The cubic root of 1616542754 is about 1173.6242244468.

The spelling of 1616542754 in words is "one billion, six hundred sixteen million, five hundred forty-two thousand, seven hundred fifty-four".