1905164272 has 40 divisors (see below), whose sum is σ = 4156733952. Its totient is φ = 838046400.

The previous prime is 1905164269. The next prime is 1905164281. The reversal of 1905164272 is 2724615091.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169138 + ... + 180049.

Almost surely, 2^1905164272 is an apocalyptic number.

It is an amenable number.

1905164272 is an abundant number, since it is smaller than the sum of its proper divisors (2251569680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1905164272 is a wasteful number, since it uses less digits than its factorization.

1905164272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349237 (or 349231 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1905164272 is about 43648.1874995973. The cubic root of 1905164272 is about 1239.6834675934.

The spelling of 1905164272 in words is "one billion, nine hundred five million, one hundred sixty-four thousand, two hundred seventy-two".