1894164528 has 40 divisors (see below), whose sum is σ = 4896575488. Its totient is φ = 630960192.

The previous prime is 1894164521. The next prime is 1894164529. The reversal of 1894164528 is 8254614981.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1894164521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62625 + ... + 87807.

Almost surely, 2^1894164528 is an apocalyptic number.

It is an amenable number.

1894164528 is an abundant number, since it is smaller than the sum of its proper divisors (3002410960).

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

1894164528 is a wasteful number, since it uses less digits than its factorization.

1894164528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26761 (or 26755 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 1894164528 is about 43522.0005054915. Note that the first 3 decimals coincide. The cubic root of 1894164528 is about 1237.2930300126.

The spelling of 1894164528 in words is "one billion, eight hundred ninety-four million, one hundred sixty-four thousand, five hundred twenty-eight".