46387181 has 2 divisors, whose sum is σ = 46387182. Its totient is φ = 46387180.

The previous prime is 46387177. The next prime is 46387207. The reversal of 46387181 is 18178364.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44342281 + 2044900 = 6659^2 + 1430^2 .

It is a cyclic number.

It is not a de Polignac number, because 46387181 - 2² = 46387177 is a prime.

It is a super-2 number, since 2×46387181² = 4303541122253522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46387111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23193590 + 23193591.

It is an arithmetic number, because the mean of its divisors is an integer number (23193591).

Almost surely, 2^46387181 is an apocalyptic number.

It is an amenable number.

46387181 is a deficient number, since it is larger than the sum of its proper divisors (1).

46387181 is an equidigital number, since it uses as much as digits as its factorization.

46387181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 46387181 is about 6810.8135343731. The cubic root of 46387181 is about 359.3072609415.

The spelling of 46387181 in words is "forty-six million, three hundred eighty-seven thousand, one hundred eighty-one".