1951887 has 16 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 1087680.

The previous prime is 1951879. The next prime is 1951891. The reversal of 1951887 is 7881591.

It is not a de Polignac number, because 1951887 - 2³ = 1951879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (190512).

2^1951887 is an apocalyptic number.

1951887 is a deficient number, since it is larger than the sum of its proper divisors (1096305).

1951887 is a wasteful number, since it uses less digits than its factorization.

1951887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318.

The product of its digits is 20160, while the sum is 39.

The square root of 1951887 is about 1397.0994953832. The cubic root of 1951887 is about 124.9735837512.

The spelling of 1951887 in words is "one million, nine hundred fifty-one thousand, eight hundred eighty-seven".