1953009774 has 12 divisors (see below), whose sum is σ = 4231521216. Its totient is φ = 651003252.

The previous prime is 1953009761. The next prime is 1953009781. The reversal of 1953009774 is 4779003591.

1953009774 is a `hidden beast` number, since 195 + 300 + 97 + 74 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54250254 + ... + 54250289.

It is an arithmetic number, because the mean of its divisors is an integer number (352626768).

Almost surely, 2^1953009774 is an apocalyptic number.

1953009774 is an abundant number, since it is smaller than the sum of its proper divisors (2278511442).

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

1953009774 is a wasteful number, since it uses less digits than its factorization.

1953009774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108500551 (or 108500548 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 1953009774 is about 44192.8701715560. The cubic root of 1953009774 is about 1249.9754179699.

The spelling of 1953009774 in words is "one billion, nine hundred fifty-three million, nine thousand, seven hundred seventy-four".