1945091533 has 16 divisors (see below), whose sum is σ = 2567700864. Its totient is φ = 1426498560.

The previous prime is 1945091483. The next prime is 1945091549. The reversal of 1945091533 is 3351905491.

It is not a de Polignac number, because 1945091533 - 2²¹ = 1942994381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945092533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741660 + ... + 744277.

It is an arithmetic number, because the mean of its divisors is an integer number (160481304).

Almost surely, 2^1945091533 is an apocalyptic number.

It is an amenable number.

1945091533 is a deficient number, since it is larger than the sum of its proper divisors (622609331).

1945091533 is a wasteful number, since it uses less digits than its factorization.

1945091533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485972.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 1945091533 is about 44103.1918686165. The cubic root of 1945091533 is about 1248.2838386170.

The spelling of 1945091533 in words is "one billion, nine hundred forty-five million, ninety-one thousand, five hundred thirty-three".