4150981 has 2 divisors, whose sum is σ = 4150982. Its totient is φ = 4150980.

The previous prime is 4150969. The next prime is 4151011. The reversal of 4150981 is 1890514.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3132900 + 1018081 = 1770^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 4150981 - 2¹¹ = 4148933 is a prime.

It is a super-2 number, since 2×4150981² = 34461286524722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4150901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075490 + 2075491.

It is an arithmetic number, because the mean of its divisors is an integer number (2075491).

Almost surely, 2^4150981 is an apocalyptic number.

It is an amenable number.

4150981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4150981 is an equidigital number, since it uses as much as digits as its factorization.

4150981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 4150981 is about 2037.3956414992. The cubic root of 4150981 is about 160.7127189218.

The spelling of 4150981 in words is "four million, one hundred fifty thousand, nine hundred eighty-one".