1854340564 has 6 divisors (see below), whose sum is σ = 3245095994. Its totient is φ = 927170280.

The previous prime is 1854340531. The next prime is 1854340573. The reversal of 1854340564 is 4650434581.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1754939664 + 99400900 = 41892^2 + 9970^2 .

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 as a sum of consecutive naturals, namely, 231792567 + ... + 231792574.

Almost surely, 2^1854340564 is an apocalyptic number.

It is an amenable number.

1854340564 is a deficient number, since it is larger than the sum of its proper divisors (1390755430).

1854340564 is a wasteful number, since it uses less digits than its factorization.

1854340564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463585145 (or 463585143 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 1854340564 is about 43062.0548046653. The cubic root of 1854340564 is about 1228.5603629357.

The spelling of 1854340564 in words is "one billion, eight hundred fifty-four million, three hundred forty thousand, five hundred sixty-four".