1913887 has 8 divisors (see below), whose sum is σ = 2002176. Its totient is φ = 1827672.

The previous prime is 1913867. The next prime is 1913893. The reversal of 1913887 is 7883191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1913887 - 2¹¹ = 1911839 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 (1913827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548 + ... + 2494.

It is an arithmetic number, because the mean of its divisors is an integer number (250272).

2^1913887 is an apocalyptic number.

1913887 is a deficient number, since it is larger than the sum of its proper divisors (88289).

1913887 is an equidigital number, since it uses as much as digits as its factorization.

1913887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037.

The product of its digits is 12096, while the sum is 37.

The square root of 1913887 is about 1383.4330486149. The cubic root of 1913887 is about 124.1572536644.

The spelling of 1913887 in words is "one million, nine hundred thirteen thousand, eight hundred eighty-seven".