16203718946 has 16 divisors (see below), whose sum is σ = 25741011384. Its totient is φ = 7623592704.

The previous prime is 16203718943. The next prime is 16203719033. The reversal of 16203718946 is 64981730261.

It can be written as a sum of positive squares in 4 ways, for example, as 12054942025 + 4148776921 = 109795^2 + 64411^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16203718946.

It is not an unprimeable number, because it can be changed into a prime (16203718943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110576 + ... + 211268.

Almost surely, 2^16203718946 is an apocalyptic number.

16203718946 is a deficient number, since it is larger than the sum of its proper divisors (9537292438).

16203718946 is a wasteful number, since it uses less digits than its factorization.

16203718946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105445.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 16203718946 in words is "sixteen billion, two hundred three million, seven hundred eighteen thousand, nine hundred forty-six".