1949895 has 12 divisors (see below), whose sum is σ = 3379896. Its totient is φ = 1039920.

The previous prime is 1949887. The next prime is 1949911. The reversal of 1949895 is 5989491.

It is not a de Polignac number, because 1949895 - 2³ = 1949887 is a prime.

It is a super-2 number, since 2×1949895² = 7604181022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 43331 = 1949895 / (1 + 9 + 4 + 9 + 8 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1949895.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21621 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (281658).

2^1949895 is an apocalyptic number.

1949895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1949895 is a deficient number, since it is larger than the sum of its proper divisors (1430001).

1949895 is a wasteful number, since it uses less digits than its factorization.

1949895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43342 (or 43339 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1949895 is about 1396.3864078399. The cubic root of 1949895 is about 124.9310553134.

The spelling of 1949895 in words is "one million, nine hundred forty-nine thousand, eight hundred ninety-five".