1905474047 has 4 divisors (see below), whose sum is σ = 1946016096. Its totient is φ = 1864932000.

The previous prime is 1905474041. The next prime is 1905474059. The reversal of 1905474047 is 7404745091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1905474047 - 2¹⁰ = 1905473023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1905473995 and 1905474013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1905474041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20270954 + ... + 20271047.

It is an arithmetic number, because the mean of its divisors is an integer number (486504024).

Almost surely, 2^1905474047 is an apocalyptic number.

1905474047 is a deficient number, since it is larger than the sum of its proper divisors (40542049).

1905474047 is an equidigital number, since it uses as much as digits as its factorization.

1905474047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40542048.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1905474047 is about 43651.7358990453. The cubic root of 1905474047 is about 1239.7506537743.

The spelling of 1905474047 in words is "one billion, nine hundred five million, four hundred seventy-four thousand, forty-seven".