1521616196 has 12 divisors (see below), whose sum is σ = 2754650220. Its totient is φ = 734573280.

The previous prime is 1521616141. The next prime is 1521616199. The reversal of 1521616196 is 6916161251.

It can be written as a sum of positive squares in 2 ways, for example, as 893412100 + 628204096 = 29890^2 + 25064^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 1521616196 parts by 55165 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1521616199) 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, 6558575 + ... + 6558806.

It is an arithmetic number, because the mean of its divisors is an integer number (229554185).

Almost surely, 2^1521616196 is an apocalyptic number.

It is an amenable number.

1521616196 is a deficient number, since it is larger than the sum of its proper divisors (1233034024).

1521616196 is a wasteful number, since it uses less digits than its factorization.

1521616196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13117414 (or 13117412 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 1521616196 is about 39007.8991487622. The cubic root of 1521616196 is about 1150.1867865471.

The spelling of 1521616196 in words is "one billion, five hundred twenty-one million, six hundred sixteen thousand, one hundred ninety-six".