1916387 has 8 divisors (see below), whose sum is σ = 2116800. Its totient is φ = 1720360.

The previous prime is 1916371. The next prime is 1916413. The reversal of 1916387 is 7836191.

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

It is a cyclic number.

It is not a de Polignac number, because 1916387 - 2⁴ = 1916371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1916287) 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, 137 + ... + 1962.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

2^1916387 is an apocalyptic number.

1916387 is a deficient number, since it is larger than the sum of its proper divisors (200413).

1916387 is a wasteful number, since it uses less digits than its factorization.

1916387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193.

The product of its digits is 9072, while the sum is 35.

The square root of 1916387 is about 1384.3363030709. The cubic root of 1916387 is about 124.2112899585.

The spelling of 1916387 in words is "one million, nine hundred sixteen thousand, three hundred eighty-seven".