1616523460 has 12 divisors (see below), whose sum is σ = 3394699308. Its totient is φ = 646609376.

The previous prime is 1616523457. The next prime is 1616523463. The reversal of 1616523460 is 643256161.

It is an interprime number because it is at equal distance from previous prime (1616523457) and next prime (1616523463).

It can be written as a sum of positive squares in 2 ways, for example, as 580713604 + 1035809856 = 24098^2 + 32184^2 .

It is a super-2 number, since 2×1616523460² = 5226296193460743200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616523463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40413067 + ... + 40413106.

It is an arithmetic number, because the mean of its divisors is an integer number (282891609).

Almost surely, 2^1616523460 is an apocalyptic number.

1616523460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616523460 is an abundant number, since it is smaller than the sum of its proper divisors (1778175848).

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

1616523460 is a wasteful number, since it uses less digits than its factorization.

1616523460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80826182 (or 80826180 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1616523460 is about 40206.0127344157. The cubic root of 1616523460 is about 1173.6195552238.

The spelling of 1616523460 in words is "one billion, six hundred sixteen million, five hundred twenty-three thousand, four hundred sixty".