151813 has 2 divisors, whose sum is σ = 151814. Its totient is φ = 151812.

The previous prime is 151799. The next prime is 151817. The reversal of 151813 is 318151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77284 + 74529 = 278^2 + 273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75906 + 75907.

It is an arithmetic number, because the mean of its divisors is an integer number (75907).

2¹⁵¹⁸¹³ is an apocalyptic number.

It is an amenable number.

151813 is a deficient number, since it is larger than the sum of its proper divisors (1).

151813 is an equidigital number, since it uses as much as digits as its factorization.

151813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 151813 is about 389.6318775460. The cubic root of 151813 is about 53.3461384184.

Adding to 151813 its reverse (318151), we get a palindrome (469964).

The spelling of 151813 in words is "one hundred fifty-one thousand, eight hundred thirteen".