1913904 has 30 divisors (see below), whose sum is σ = 5356676. Its totient is φ = 637920.

The previous prime is 1913903. The next prime is 1913917. The reversal of 1913904 is 4093191.

It is not an unprimeable number, because it can be changed into a prime (1913903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6502 + ... + 6789.

2^1913904 is an apocalyptic number.

It is an amenable number.

1913904 is an abundant number, since it is smaller than the sum of its proper divisors (3442772).

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

1913904 is a wasteful number, since it uses less digits than its factorization.

1913904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13305 (or 13296 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1913904 is about 1383.4391927367. The cubic root of 1913904 is about 124.1576212700.

It can be divided in two parts, 191 and 3904, that added together give a triangular number (4095 = T₉₀).

The spelling of 1913904 in words is "one million, nine hundred thirteen thousand, nine hundred four".