1905993234 has 32 divisors (see below), whose sum is σ = 4250864640. Its totient is φ = 633032496.

The previous prime is 1905993223. The next prime is 1905993241. The reversal of 1905993234 is 4323995091.

It is a self number, because there is not a number n which added to its sum of digits gives 1905993234.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48754 + ... + 78669.

It is an arithmetic number, because the mean of its divisors is an integer number (132839520).

Almost surely, 2^1905993234 is an apocalyptic number.

1905993234 is an abundant number, since it is smaller than the sum of its proper divisors (2344871406).

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

1905993234 is a wasteful number, since it uses less digits than its factorization.

1905993234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127711 (or 127705 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 1905993234 is about 43657.6824167294. The cubic root of 1905993234 is about 1239.8632423753.

The spelling of 1905993234 in words is "one billion, nine hundred five million, nine hundred ninety-three thousand, two hundred thirty-four".