3784634505 has 12 divisors (see below), whose sum is σ = 6560033220. Its totient is φ = 2018471712.

The previous prime is 3784634479. The next prime is 3784634543. The reversal of 3784634505 is 5054364873.

3784634505 is a `hidden beast` number, since 3 + 7 + 8 + 4 + 634 + 5 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 986965056 + 2797669449 = 31416^2 + 52893^2 .

It is not a de Polignac number, because 3784634505 - 2¹¹ = 3784632457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 84102989 = 3784634505 / (3 + 7 + 8 + 4 + 6 + 3 + 4 + 5 + 0 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42051450 + ... + 42051539.

It is an arithmetic number, because the mean of its divisors is an integer number (546669435).

Almost surely, 2^3784634505 is an apocalyptic number.

It is an amenable number.

3784634505 is a deficient number, since it is larger than the sum of its proper divisors (2775398715).

3784634505 is a wasteful number, since it uses less digits than its factorization.

3784634505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84103000 (or 84102997 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The square root of 3784634505 is about 61519.3831649831. The cubic root of 3784634505 is about 1558.3846012346.

The spelling of 3784634505 in words is "three billion, seven hundred eighty-four million, six hundred thirty-four thousand, five hundred five".