1616183461 has 4 divisors (see below), whose sum is σ = 1618285900. Its totient is φ = 1614081024.

The previous prime is 1616183449. The next prime is 1616183479. The reversal of 1616183461 is 1643816161.

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

It can be written as a sum of positive squares in 2 ways, for example, as 973814436 + 642369025 = 31206^2 + 25345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616183461 - 2⁷ = 1616183333 is a prime.

It is a super-2 number, since 2×1616183461² = 5224097959219877042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1616183461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616183411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050066 + ... + 1051603.

It is an arithmetic number, because the mean of its divisors is an integer number (404571475).

Almost surely, 2^1616183461 is an apocalyptic number.

It is an amenable number.

1616183461 is a deficient number, since it is larger than the sum of its proper divisors (2102439).

1616183461 is an equidigital number, since it uses as much as digits as its factorization.

1616183461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102438.

The product of its digits is 20736, while the sum is 37.

The square root of 1616183461 is about 40201.7843011974. The cubic root of 1616183461 is about 1173.5372680473.

The spelling of 1616183461 in words is "one billion, six hundred sixteen million, one hundred eighty-three thousand, four hundred sixty-one".