2151194536 has 16 divisors (see below), whose sum is σ = 4040562240. Its totient is φ = 1073711280.

The previous prime is 2151194533. The next prime is 2151194537. The reversal of 2151194536 is 6354911512.

It is a junction number, because it is equal to n+sod(n) for n = 2151194495 and 2151194504.

It is not an unprimeable number, because it can be changed into a prime (2151194533) 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 in 3 ways as a sum of consecutive naturals, for example, 230896 + ... + 240031.

It is an arithmetic number, because the mean of its divisors is an integer number (252535140).

Almost surely, 2^2151194536 is an apocalyptic number.

It is an amenable number.

2151194536 is a deficient number, since it is larger than the sum of its proper divisors (1889367704).

2151194536 is a wasteful number, since it uses less digits than its factorization.

2151194536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471504 (or 471500 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 2151194536 is about 46380.9717017658. The cubic root of 2151194536 is about 1290.9018663846.

The spelling of 2151194536 in words is "two billion, one hundred fifty-one million, one hundred ninety-four thousand, five hundred thirty-six".