16102981 has 8 divisors (see below), whose sum is σ = 16872704. Its totient is φ = 15348960.

The previous prime is 16102979. The next prime is 16102991. The reversal of 16102981 is 18920161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16102981 - 2¹ = 16102979 is a prime.

It is a super-2 number, since 2×16102981² = 518611994172722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16102901) 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, 1800 + ... + 5953.

It is an arithmetic number, because the mean of its divisors is an integer number (2109088).

Almost surely, 2^16102981 is an apocalyptic number.

It is an amenable number.

16102981 is a deficient number, since it is larger than the sum of its proper divisors (769723).

16102981 is an equidigital number, since it uses as much as digits as its factorization.

16102981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7851.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 16102981 is about 4012.8519783316. The cubic root of 16102981 is about 252.5236706235.

The spelling of 16102981 in words is "sixteen million, one hundred two thousand, nine hundred eighty-one".