36154981 has 2 divisors, whose sum is σ = 36154982. Its totient is φ = 36154980.

The previous prime is 36154961. The next prime is 36154991. The reversal of 36154981 is 18945163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34869025 + 1285956 = 5905^2 + 1134^2 .

It is a cyclic number.

It is not a de Polignac number, because 36154981 - 2⁵ = 36154949 is a prime.

It is a super-2 number, since 2×36154981² = 2614365302220722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36154981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36154901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18077490 + 18077491.

It is an arithmetic number, because the mean of its divisors is an integer number (18077491).

Almost surely, 2^36154981 is an apocalyptic number.

It is an amenable number.

36154981 is a deficient number, since it is larger than the sum of its proper divisors (1).

36154981 is an equidigital number, since it uses as much as digits as its factorization.

36154981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 36154981 is about 6012.9012132248. The cubic root of 36154981 is about 330.6658761787.

The spelling of 36154981 in words is "thirty-six million, one hundred fifty-four thousand, nine hundred eighty-one".