1953009773 has 16 divisors (see below), whose sum is σ = 2337745536. Its totient is φ = 1607960640.

The previous prime is 1953009761. The next prime is 1953009781. The reversal of 1953009773 is 3779003591.

It is not a de Polignac number, because 1953009773 - 2⁴ = 1953009757 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 (1953009713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121265 + ... + 136422.

It is an arithmetic number, because the mean of its divisors is an integer number (146109096).

Almost surely, 2^1953009773 is an apocalyptic number.

1953009773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1953009773 is a deficient number, since it is larger than the sum of its proper divisors (384735763).

1953009773 is a wasteful number, since it uses less digits than its factorization.

1953009773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257764.

The product of its (nonzero) digits is 178605, while the sum is 44.

The square root of 1953009773 is about 44192.8701602419. The cubic root of 1953009773 is about 1249.9754177566.

The spelling of 1953009773 in words is "one billion, nine hundred fifty-three million, nine thousand, seven hundred seventy-three".