181849635916 has 12 divisors (see below), whose sum is σ = 342716621632. Its totient is φ = 83930601168.

The previous prime is 181849635889. The next prime is 181849635917. The reversal of 181849635916 is 619536948181.

It is not an unprimeable number, because it can be changed into a prime (181849635917) 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, 1748554140 + ... + 1748554243.

Almost surely, 2^181849635916 is an apocalyptic number.

It is an amenable number.

181849635916 is a deficient number, since it is larger than the sum of its proper divisors (160866985716).

181849635916 is a wasteful number, since it uses less digits than its factorization.

181849635916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497108400 (or 3497108398 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 61.

The spelling of 181849635916 in words is "one hundred eighty-one billion, eight hundred forty-nine million, six hundred thirty-five thousand, nine hundred sixteen".