1860981 has 8 divisors (see below), whose sum is σ = 2516544. Its totient is φ = 1223040.

The previous prime is 1860979. The next prime is 1860983. The reversal of 1860981 is 1890681.

It is an interprime number because it is at equal distance from previous prime (1860979) and next prime (1860983).

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

It is not a de Polignac number, because 1860981 - 2¹ = 1860979 is a prime.

It is a super-2 number, since 2×1860981² = 6926500564722, which contains 22 as substring.

1860981 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860983) 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, 4156 + ... + 4581.

It is an arithmetic number, because the mean of its divisors is an integer number (314568).

2^1860981 is an apocalyptic number.

It is an amenable number.

1860981 is a deficient number, since it is larger than the sum of its proper divisors (655563).

1860981 is an equidigital number, since it uses as much as digits as its factorization.

1860981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8811.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1860981 is about 1364.1777743388. The cubic root of 1860981 is about 123.0025116811.

The spelling of 1860981 in words is "one million, eight hundred sixty thousand, nine hundred eighty-one".