1011945 has 16 divisors (see below), whose sum is σ = 1766592. Its totient is φ = 490560.

The previous prime is 1011943. The next prime is 1011947. The reversal of 1011945 is 5491101.

It is an interprime number because it is at equal distance from previous prime (1011943) and next prime (1011947).

It is not a de Polignac number, because 1011945 - 2¹ = 1011943 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1011943) 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, 2902 + ... + 3231.

It is an arithmetic number, because the mean of its divisors is an integer number (110412).

2^1011945 is an apocalyptic number.

1011945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011945 is a deficient number, since it is larger than the sum of its proper divisors (754647).

1011945 is a wasteful number, since it uses less digits than its factorization.

1011945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1011945 is about 1005.9547703550. The cubic root of 1011945 is about 100.3965917373.

The spelling of 1011945 in words is "one million, eleven thousand, nine hundred forty-five".