18532272747 has 16 divisors (see below), whose sum is σ = 27300741120. Its totient is φ = 11122522752.

The previous prime is 18532272739. The next prime is 18532272751. The reversal of 18532272747 is 74727223581.

It is not a de Polignac number, because 18532272747 - 2³ = 18532272739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18532272696 and 18532272705.

It is not an unprimeable number, because it can be changed into a prime (18532272757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7898347 + ... + 7900692.

It is an arithmetic number, because the mean of its divisors is an integer number (1706296320).

Almost surely, 2^18532272747 is an apocalyptic number.

18532272747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18532272747 is a deficient number, since it is larger than the sum of its proper divisors (8768468373).

18532272747 is a wasteful number, since it uses less digits than its factorization.

18532272747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15799082.

The product of its digits is 1317120, while the sum is 48.

The spelling of 18532272747 in words is "eighteen billion, five hundred thirty-two million, two hundred seventy-two thousand, seven hundred forty-seven".