1107981 has 24 divisors (see below), whose sum is σ = 1876160. Its totient is φ = 616896.

The previous prime is 1107937. The next prime is 1107989. The reversal of 1107981 is 1897011.

It is not a de Polignac number, because 1107981 - 2⁶ = 1107917 is a prime.

It is a super-2 number, since 2×1107981² = 2455243792722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1107989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2505 + ... + 2913.

2^1107981 is an apocalyptic number.

It is an amenable number.

1107981 is a deficient number, since it is larger than the sum of its proper divisors (768179).

1107981 is a wasteful number, since it uses less digits than its factorization.

1107981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 1107981 is about 1052.6067641812. The cubic root of 1107981 is about 103.4770655618.

The spelling of 1107981 in words is "one million, one hundred seven thousand, nine hundred eighty-one".